{"id":1108,"date":"2023-03-08T10:19:03","date_gmt":"2023-03-08T09:19:03","guid":{"rendered":"http:\/\/192.168.1.213:8088\/?p=1108"},"modified":"2023-10-13T05:40:11","modified_gmt":"2023-10-13T04:40:11","slug":"gitlab-ci-cd-pipeline-to-build-your-own-docker-container-and-upload-to-your-own-registry","status":"publish","type":"post","link":"http:\/\/192.168.1.213:8088\/gitlab-ci-cd-pipeline-to-build-your-own-docker-container-and-upload-to-your-own-registry\/","title":{"rendered":"GitLab CI\/CD pipeline to build your own Docker container and upload to your own registry \ud83d\udce6"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"1108\" class=\"elementor elementor-1108\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-865b8cb elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"865b8cb\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-31b63e5\" data-id=\"31b63e5\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-d9cac70 elementor-toc--minimized-on-tablet elementor-widget elementor-widget-table-of-contents\" data-id=\"d9cac70\" data-element_type=\"widget\" data-settings=\"{&quot;headings_by_tags&quot;:[&quot;h5&quot;,&quot;h6&quot;],&quot;exclude_headings_by_selector&quot;:[],&quot;marker_view&quot;:&quot;bullets&quot;,&quot;icon&quot;:{&quot;value&quot;:&quot;fas fa-circle&quot;,&quot;library&quot;:&quot;fa-solid&quot;},&quot;minimize_box&quot;:&quot;yes&quot;,&quot;minimized_on&quot;:&quot;tablet&quot;,&quot;hierarchical_view&quot;:&quot;yes&quot;,&quot;min_height&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"table-of-contents.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-toc__header\">\n\t\t\t<h4 class=\"elementor-toc__header-title\">\n\t\t\t\tTable of Contents\t\t\t<\/h4>\n\t\t\t\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--expand\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__d9cac70\" aria-expanded=\"true\" aria-label=\"Open table of contents\"><i aria-hidden=\"true\" class=\"fas fa-chevron-down\"><\/i><\/div>\n\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--collapse\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__d9cac70\" aria-expanded=\"true\" aria-label=\"Close table of contents\"><i aria-hidden=\"true\" class=\"fas fa-chevron-up\"><\/i><\/div>\n\t\t\t\t\t<\/div>\n\t\t<div id=\"elementor-toc__d9cac70\" class=\"elementor-toc__body\">\n\t\t\t<div class=\"elementor-toc__spinner-container\">\n\t\t\t\t<i class=\"elementor-toc__spinner eicon-animation-spin eicon-loading\" aria-hidden=\"true\"><\/i>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-031a020 elementor-widget elementor-widget-heading\" data-id=\"031a020\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h5 class=\"elementor-heading-title elementor-size-default\">Introduction<\/h5>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-00e07e7 elementor-widget elementor-widget-text-editor\" data-id=\"00e07e7\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p id=\"8adc\" class=\"pw-post-body-paragraph jb jc hm jd b je vd in jg jh ve iq jj jk vf jm jn jo vg jq jr js vh ju jv jw hf bi\" data-selectable-paragraph=\"\">The <a href=\"https:\/\/www.docker.com\/resources\/what-container\/\" target=\"_blank\" rel=\"noopener\">Docker containers<\/a> are standardized units that can be created on demand to deploy a defined set of applications for a dedicated environment. It will be used in the pipeline where jobs are executed.<\/p><p>Each job can be executed inside a separate Docker container, which provides an isolated environment for the job to run in. This allows for a more consistent and predictable environment across different projects.<\/p><p><strong>My personal recommendation to you:<br \/><\/strong>You should try to leverage your own Docker environment for most of your GitLab projects.\u00a0<\/p><p>There are only a few scenarios where using a Docker container doesn&#8217;t make sense. A major advantage is that all dependencies and requirements are defined in the Docker image that can be used in further pipeline jobs.<\/p><p>If you would like to use the GitLab Docker registry, one requirement is to configure GitLab with SSL and enable the Docker registry. I have been covering this topic in my previous Blog post, which you can check out here:<\/p><p><a href=\"http:\/\/192.168.1.213:8088\/gitlab-server-with-a-self-signed-certificate-and-embedded-docker-registry\/\" target=\"_blank\" rel=\"noopener\">GitLab server with a self-signed certificate and embedded Docker registry<\/a><\/p><p id=\"fe7c\" class=\"pw-post-body-paragraph jb jc hm jd b je jf in jg jh ji iq jj jk jl jm jn jo jp jq jr js jt ju jv jw hf bi\" data-selectable-paragraph=\"\"><strong class=\"jd hn\">When it makes sense to use your own Docker images in GitLab pipelines:<\/strong><\/p><ul class=\"\"><li id=\"c261\" class=\"uc ud hm jd b je jf jh ji jk ue jo uf js ug jw uh ui uj uk bi\" data-selectable-paragraph=\"\">When you need a clean environment for every job.<\/li><li id=\"52bf\" class=\"uc ud hm jd b je ul jh um jk un jo uo js up jw uh ui uj uk bi\" data-selectable-paragraph=\"\">When you need to ensure that the projects run independently from each other.<\/li><\/ul><p id=\"69eb\" class=\"pw-post-body-paragraph jb jc hm jd b je jf in jg jh ji iq jj jk jl jm jn jo jp jq jr js jt ju jv jw hf bi\" data-selectable-paragraph=\"\"><strong class=\"jd hn\">What to consider:<\/strong><\/p><ul class=\"\"><li id=\"fd1a\" class=\"uc ud hm jd b je jf jh ji jk ue jo uf js ug jw uh ui uj uk bi\" data-selectable-paragraph=\"\">The overhead of pulling (downloading the image) a Docker image for every job execution. That&#8217;s the reason why I like to use my embedded GitLab registry.<\/li><\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-28df654 elementor-widget elementor-widget-heading\" data-id=\"28df654\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h5 class=\"elementor-heading-title elementor-size-default\">Requirements<\/h5>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bfbdc97 elementor-widget elementor-widget-text-editor\" data-id=\"bfbdc97\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>In my following example, I am using a GitLab server with 2 GitLab runners (shell and docker executor).\u00a0<\/p><p>If you want to learn more about GitLab runners and executors, I can recommend checking out the GitLab documentation page:<\/p><p><a href=\"https:\/\/docs.gitlab.com\/runner\/register\/\" target=\"_blank\" rel=\"noopener\">https:\/\/docs.gitlab.com\/runner\/register\/<\/a><\/p><ul><li>The Shell runner is used to build the Docker image and push it to the GitLab server registry<\/li><li>The Docker runner is used to pull the Docker image and execute the jobs which are defined in the pipeline<\/li><\/ul><p>\u00a0<\/p><p>In my pipeline, I will use two different Docker images to execute jobs in two for two different use cases.\u00a0 One Docker container will be dedicated to an Ansible job and the second one is used for a Terraform job.<\/p><p>The Ansible Docker container is used to execute a playbook against Cisco DNA Center.<br \/>The Terraform Docker container is used to execute an IaC change against Cisco ACI.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c33a81c elementor-widget elementor-widget-heading\" data-id=\"c33a81c\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h5 class=\"elementor-heading-title elementor-size-default\">Define the Docker files<\/h5>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-31b74b3 elementor-widget elementor-widget-text-editor\" data-id=\"31b74b3\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>First, create the following folder structure and files in your GitLab repository (the brackets are indicating if it is a Folder or a File):<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1c9229a elementor-widget elementor-widget-code-highlight\" data-id=\"1c9229a\" data-element_type=\"widget\" data-widget_type=\"code-highlight.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"prismjs-okaidia  \">\n\t\t\t<pre data-line=\"\" class=\"highlight-height language-markup \">\n\t\t\t\t<code readonly=\"true\" class=\"language-markup\">\n\t\t\t\t\t<xmp>docker (Folder)\n\u251c\u2500\u2500 aci (Folder)\n\u2502   \u2514\u2500\u2500 Dockerfile (File)\n\u2514\u2500\u2500 dnac (Folder)\n    \u2514\u2500\u2500 Dockerfile (File) <\/xmp>\n\t\t\t\t<\/code>\n\t\t\t<\/pre>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8fe6b90 elementor-widget elementor-widget-text-editor\" data-id=\"8fe6b90\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>Copy the following content into\u00a0<strong>docker &gt; dnac &gt; Dockerfile<\/strong>:<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0f3d6b7 elementor-widget elementor-widget-code-highlight\" data-id=\"0f3d6b7\" data-element_type=\"widget\" data-widget_type=\"code-highlight.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"prismjs-default copy-to-clipboard \">\n\t\t\t<pre data-line=\"\" class=\"highlight-height language-markup line-numbers\">\n\t\t\t\t<code readonly=\"true\" class=\"language-markup\">\n\t\t\t\t\t<xmp>FROM ubuntu:22.04\r\n\r\nRUN apt-get update && \\\r\n  apt-get install -y gcc python3.11 git && \\\r\n  apt-get install -y python3-pip ssh && \\\r\n  pip3 install --upgrade pip && \\\r\n  pip3 install ansible && \\\r\n  pip3 install dnacentersdk && \\\r\n  pip3 install jmespath && \\\r\n  pip3 install pyats[full] && \\ \r\n  pip3 install ansible-lint && \\ \r\n  ansible-galaxy collection install cisco.dnac<\/xmp>\n\t\t\t\t<\/code>\n\t\t\t<\/pre>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7a9ad3c elementor-widget elementor-widget-text-editor\" data-id=\"7a9ad3c\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>Copy the following content into\u00a0<strong>docker &gt; aci &gt; Dockerfile<\/strong>:<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ff47ef4 elementor-widget elementor-widget-code-highlight\" data-id=\"ff47ef4\" data-element_type=\"widget\" data-widget_type=\"code-highlight.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"prismjs-default copy-to-clipboard \">\n\t\t\t<pre data-line=\"\" class=\"highlight-height language-markup line-numbers\">\n\t\t\t\t<code readonly=\"true\" class=\"language-markup\">\n\t\t\t\t\t<xmp>FROM ubuntu:22.04 \n\nRUN apt-get update && \\\n  apt-get install -y gnupg software-properties-common curl gcc python3.11 python3-pip git && \\\n  curl -fsSL https:\/\/apt.releases.hashicorp.com\/gpg | apt-key add - && \\\n  apt-add-repository \"deb [arch=amd64] https:\/\/apt.releases.hashicorp.com $(lsb_release -cs) main\" && \\\n  apt-get update && \\\n  apt-get install terraform && \\\n  pip3 install --upgrade pip && \\\n  pip3 install iac-validate==0.1.2 && \\\n  pip3 install iac-test==0.1.0<\/xmp>\n\t\t\t\t<\/code>\n\t\t\t<\/pre>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1f44108 elementor-widget elementor-widget-heading\" data-id=\"1f44108\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h5 class=\"elementor-heading-title elementor-size-default\">Create the pipeline with a Build stage<\/h5>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c556c06 elementor-widget elementor-widget-code-highlight\" data-id=\"c556c06\" data-element_type=\"widget\" data-widget_type=\"code-highlight.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"prismjs-default copy-to-clipboard \">\n\t\t\t<pre data-line=\"\" class=\"highlight-height language-bash line-numbers\">\n\t\t\t\t<code readonly=\"true\" class=\"language-bash\">\n\t\t\t\t\t<xmp>variables:\n  IMAGE_NAME_DNAC: $CI_REGISTRY_IMAGE\/dnac  \n  IMAGE_TAG_DNAC: \"1.0\"\n  IMAGE_NAME_ACI: $CI_REGISTRY_IMAGE\/aci  \n  IMAGE_TAG_ACI: \"1.0\"\n\nstages:\n  - build\n\nbuild_image:\n  stage: build\n  tags:\n    - shell-runner\n  script:\n    - docker build -t $IMAGE_NAME_DNAC:$IMAGE_TAG_DNAC docker\/dnac\/.\n    - docker build -t $IMAGE_NAME_ACI:$IMAGE_TAG_ACI docker\/aci\/.\n\npush_image:\n  stage: build\n  needs:\n    - build_image\n  tags:\n    - shell-runner\n  before_script:\n    - docker login -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD $CI_REGISTRY\n  script:\n    - docker push $IMAGE_NAME_DNAC:$IMAGE_TAG_DNAC\n    - docker push $IMAGE_NAME_ACI:$IMAGE_TAG_ACI <\/xmp>\n\t\t\t\t<\/code>\n\t\t\t<\/pre>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-67b5c4d elementor-widget elementor-widget-text-editor\" data-id=\"67b5c4d\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><strong>Validate the status of the pipeline:<\/strong><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-22d790e elementor-widget elementor-widget-image\" data-id=\"22d790e\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"http:\/\/192.168.1.213:8088\/wp-content\/uploads\/2023\/03\/GITLAB_CICD_DOCKER_CONTAINER_002.png\" data-elementor-open-lightbox=\"yes\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MTQwNiwidXJsIjoiaHR0cDpcL1wvMTkyLjE2OC4xLjIxMzo4MDg4XC93cC1jb250ZW50XC91cGxvYWRzXC8yMDIzXC8wM1wvR0lUTEFCX0NJQ0RfRE9DS0VSX0NPTlRBSU5FUl8wMDIucG5nIn0%3D\">\n\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"322\" src=\"http:\/\/192.168.1.213:8088\/wp-content\/uploads\/2023\/03\/GITLAB_CICD_DOCKER_CONTAINER_002-1024x412.png\" class=\"attachment-large size-large wp-image-1406\" alt=\"\" srcset=\"http:\/\/192.168.1.213:8088\/wp-content\/uploads\/2023\/03\/GITLAB_CICD_DOCKER_CONTAINER_002-1024x412.png 1024w, http:\/\/192.168.1.213:8088\/wp-content\/uploads\/2023\/03\/GITLAB_CICD_DOCKER_CONTAINER_002-300x121.png 300w, http:\/\/192.168.1.213:8088\/wp-content\/uploads\/2023\/03\/GITLAB_CICD_DOCKER_CONTAINER_002-768x309.png 768w, http:\/\/192.168.1.213:8088\/wp-content\/uploads\/2023\/03\/GITLAB_CICD_DOCKER_CONTAINER_002.png 1490w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8bc535d elementor-widget elementor-widget-text-editor\" data-id=\"8bc535d\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><strong>Check if the Docker containers have been successfully pushed to your GitLab registry:<\/strong><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5afc792 elementor-widget elementor-widget-image\" data-id=\"5afc792\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"http:\/\/192.168.1.213:8088\/wp-content\/uploads\/2023\/03\/GITLAB_CICD_DOCKER_CONTAINER_001.png\" data-elementor-open-lightbox=\"yes\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MTQwNSwidXJsIjoiaHR0cDpcL1wvMTkyLjE2OC4xLjIxMzo4MDg4XC93cC1jb250ZW50XC91cGxvYWRzXC8yMDIzXC8wM1wvR0lUTEFCX0NJQ0RfRE9DS0VSX0NPTlRBSU5FUl8wMDEucG5nIn0%3D\">\n\t\t\t\t\t\t\t<img decoding=\"async\" width=\"800\" height=\"323\" src=\"http:\/\/192.168.1.213:8088\/wp-content\/uploads\/2023\/03\/GITLAB_CICD_DOCKER_CONTAINER_001-1024x413.png\" class=\"attachment-large size-large wp-image-1405\" alt=\"\" srcset=\"http:\/\/192.168.1.213:8088\/wp-content\/uploads\/2023\/03\/GITLAB_CICD_DOCKER_CONTAINER_001-1024x413.png 1024w, http:\/\/192.168.1.213:8088\/wp-content\/uploads\/2023\/03\/GITLAB_CICD_DOCKER_CONTAINER_001-300x121.png 300w, http:\/\/192.168.1.213:8088\/wp-content\/uploads\/2023\/03\/GITLAB_CICD_DOCKER_CONTAINER_001-768x310.png 768w, http:\/\/192.168.1.213:8088\/wp-content\/uploads\/2023\/03\/GITLAB_CICD_DOCKER_CONTAINER_001-1536x619.png 1536w, http:\/\/192.168.1.213:8088\/wp-content\/uploads\/2023\/03\/GITLAB_CICD_DOCKER_CONTAINER_001-2048x826.png 2048w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-99978a4 elementor-widget elementor-widget-heading\" data-id=\"99978a4\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h5 class=\"elementor-heading-title elementor-size-default\">Extend the pipeline with an Execution stage<\/h5>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bde9833 elementor-widget elementor-widget-text-editor\" data-id=\"bde9833\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>Now that you know that the Build stage works as expected, it would be good to validate, if the binaries (Ansible \/ Terraform) are working as well.\u00a0<\/p><p>For that, it is needed to create another stage in the pipeline which uses the Docker executor and runs a command within the Docker container.\u00a0<\/p><p>In the following example, the Ansible and Terraform version commands are executed and the output is saved as an Artifact.\u00a0<\/p><p><strong>What is an Artifact?! \ud83d\ude33<\/strong><\/p><p>Check out the following link: <a href=\"https:\/\/docs.gitlab.com\/ee\/ci\/pipelines\/job_artifacts.html\" target=\"_blank\" rel=\"noopener\">https:\/\/docs.gitlab.com\/ee\/ci\/pipelines\/job_artifacts.html<\/a><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f675dad elementor-widget elementor-widget-code-highlight\" data-id=\"f675dad\" data-element_type=\"widget\" data-widget_type=\"code-highlight.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"prismjs-default copy-to-clipboard \">\n\t\t\t<pre data-line=\"\" class=\"highlight-height language-bash line-numbers\">\n\t\t\t\t<code readonly=\"true\" class=\"language-bash\">\n\t\t\t\t\t<xmp>variables:\n  IMAGE_NAME_DNAC: $CI_REGISTRY_IMAGE\/dnac  \n  IMAGE_TAG_DNAC: \"1.0\"\n  IMAGE_NAME_ACI: $CI_REGISTRY_IMAGE\/aci  \n  IMAGE_TAG_ACI: \"1.0\"\n\nstages:\n  - build\n  - validate\n\nbuild_image:\n  stage: build\n  tags:\n    - shell-runner\n  script:\n    - docker build -t $IMAGE_NAME_DNAC:$IMAGE_TAG_DNAC docker\/dnac\/.\n    - docker build -t $IMAGE_NAME_ACI:$IMAGE_TAG_ACI docker\/aci\/.\n\npush_image:\n  stage: build\n  needs:\n    - build_image\n  tags:\n    - shell-runner\n  before_script:\n    - docker login -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD $CI_REGISTRY\n  script:\n    - docker push $IMAGE_NAME_DNAC:$IMAGE_TAG_DNAC\n    - docker push $IMAGE_NAME_ACI:$IMAGE_TAG_ACI\n\nvalidate_dnac_container:\n  stage: validate\n  needs:\n    - push_image\n  tags:\n    - docker-runner\n  image: $IMAGE_NAME_DNAC:$IMAGE_TAG_DNAC\n  script:\n    - ansible --version >> dnac_container_output.log\n    - pip3 list >> dnac_container_output.log\n  artifacts:\n    paths:\n      - \"dnac_container_output.log\"\n    when: on_success\n    expire_in: \"1 days\"\n\nvalidate_aci_container:\n  stage: validate\n  needs:\n    - push_image\n  tags:\n    - docker-runner\n  image: $IMAGE_NAME_ACI:$IMAGE_TAG_ACI\n  script:\n    - terraform --version >> aci_container_output.log\n    - pip3 list >> aci_container_output.log\n  artifacts:\n    paths:\n      - \"aci_container_output.log\"\n    when: on_success\n    expire_in: \"1 days\" <\/xmp>\n\t\t\t\t<\/code>\n\t\t\t<\/pre>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0702e1e elementor-widget elementor-widget-text-editor\" data-id=\"0702e1e\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>Validate the pipeline execution and check the dependencies which you configured in the pipeline.<\/p><p>Again a new pipeline feature&#8230; Yes! A very useful one. <br \/>Check out the following link for more: <a href=\"https:\/\/docs.gitlab.com\/ee\/ci\/yaml\/index.html#needs\" target=\"_blank\" rel=\"noopener\">https:\/\/docs.gitlab.com\/ee\/ci\/yaml\/index.html#needs<\/a><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8044678 elementor-widget elementor-widget-image\" data-id=\"8044678\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"http:\/\/192.168.1.213:8088\/wp-content\/uploads\/2023\/03\/GITLAB_CICD_DOCKER_CONTAINER_003.png\" data-elementor-open-lightbox=\"yes\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MTQwNywidXJsIjoiaHR0cDpcL1wvMTkyLjE2OC4xLjIxMzo4MDg4XC93cC1jb250ZW50XC91cGxvYWRzXC8yMDIzXC8wM1wvR0lUTEFCX0NJQ0RfRE9DS0VSX0NPTlRBSU5FUl8wMDMucG5nIn0%3D\">\n\t\t\t\t\t\t\t<img decoding=\"async\" width=\"800\" height=\"334\" src=\"http:\/\/192.168.1.213:8088\/wp-content\/uploads\/2023\/03\/GITLAB_CICD_DOCKER_CONTAINER_003-1024x428.png\" class=\"attachment-large size-large wp-image-1407\" alt=\"\" srcset=\"http:\/\/192.168.1.213:8088\/wp-content\/uploads\/2023\/03\/GITLAB_CICD_DOCKER_CONTAINER_003-1024x428.png 1024w, http:\/\/192.168.1.213:8088\/wp-content\/uploads\/2023\/03\/GITLAB_CICD_DOCKER_CONTAINER_003-300x125.png 300w, http:\/\/192.168.1.213:8088\/wp-content\/uploads\/2023\/03\/GITLAB_CICD_DOCKER_CONTAINER_003-768x321.png 768w, http:\/\/192.168.1.213:8088\/wp-content\/uploads\/2023\/03\/GITLAB_CICD_DOCKER_CONTAINER_003-1536x642.png 1536w, http:\/\/192.168.1.213:8088\/wp-content\/uploads\/2023\/03\/GITLAB_CICD_DOCKER_CONTAINER_003.png 1565w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a8c7d08 elementor-widget elementor-widget-text-editor\" data-id=\"a8c7d08\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><strong>Download and validate the job artifacts:<\/strong><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-358585e elementor-widget elementor-widget-image\" data-id=\"358585e\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"http:\/\/192.168.1.213:8088\/wp-content\/uploads\/2023\/03\/GITLAB_CICD_DOCKER_CONTAINER_004.png\" data-elementor-open-lightbox=\"yes\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MTQwOCwidXJsIjoiaHR0cDpcL1wvMTkyLjE2OC4xLjIxMzo4MDg4XC93cC1jb250ZW50XC91cGxvYWRzXC8yMDIzXC8wM1wvR0lUTEFCX0NJQ0RfRE9DS0VSX0NPTlRBSU5FUl8wMDQucG5nIn0%3D\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"334\" src=\"http:\/\/192.168.1.213:8088\/wp-content\/uploads\/2023\/03\/GITLAB_CICD_DOCKER_CONTAINER_004-1024x428.png\" class=\"attachment-large size-large wp-image-1408\" alt=\"\" srcset=\"http:\/\/192.168.1.213:8088\/wp-content\/uploads\/2023\/03\/GITLAB_CICD_DOCKER_CONTAINER_004-1024x428.png 1024w, http:\/\/192.168.1.213:8088\/wp-content\/uploads\/2023\/03\/GITLAB_CICD_DOCKER_CONTAINER_004-300x125.png 300w, http:\/\/192.168.1.213:8088\/wp-content\/uploads\/2023\/03\/GITLAB_CICD_DOCKER_CONTAINER_004-768x321.png 768w, http:\/\/192.168.1.213:8088\/wp-content\/uploads\/2023\/03\/GITLAB_CICD_DOCKER_CONTAINER_004-1536x641.png 1536w, http:\/\/192.168.1.213:8088\/wp-content\/uploads\/2023\/03\/GITLAB_CICD_DOCKER_CONTAINER_004.png 1564w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-10cbd8d elementor-widget elementor-widget-heading\" data-id=\"10cbd8d\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h5 class=\"elementor-heading-title elementor-size-default\">Summary<\/h5>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-51dfafb elementor-widget elementor-widget-text-editor\" data-id=\"51dfafb\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>Let&#8217;s summarize what you have learned during this post:<\/p><ul><li>You learned why it is useful to create your own Docker images <strong>#cleanenvironment<\/strong><\/li><li>You created two different Docker containers with for different use cases<\/li><li>You defined a pipeline with a build stage that: Builds and Pushes the Docker containers to our GitLab container registry<\/li><li>You validated the versions of Ansible and Terraform within your Docker containers by using the GitLab Docker runner\u00a0\u00a0<\/li><\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-35b9f44 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"35b9f44\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-6f07e14\" data-id=\"6f07e14\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-af80fa8 elementor-widget elementor-widget-html\" data-id=\"af80fa8\" data-element_type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<script type=\"text\/javascript\">\n(function($) {\n    $(window).load(function() {\n        $('.token.entity').each(function() {\n            var title = $(this).attr('title');\n            $(this).html(title);\n        })\n    });\n})(jQuery);\n<\/script>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Table of Contents Introduction The Docker containers are standardized units that can be created on demand to deploy a defined set of applications for a dedicated environment. It will be used in the pipeline where jobs are executed. Each job can be executed inside a separate Docker container, which provides an isolated environment for the [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":1403,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"rank_math_lock_modified_date":false,"footnotes":""},"categories":[11],"tags":[],"class_list":["post-1108","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-automation"],"_links":{"self":[{"href":"http:\/\/192.168.1.213:8088\/wp-json\/wp\/v2\/posts\/1108"}],"collection":[{"href":"http:\/\/192.168.1.213:8088\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/192.168.1.213:8088\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/192.168.1.213:8088\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/192.168.1.213:8088\/wp-json\/wp\/v2\/comments?post=1108"}],"version-history":[{"count":17,"href":"http:\/\/192.168.1.213:8088\/wp-json\/wp\/v2\/posts\/1108\/revisions"}],"predecessor-version":[{"id":1467,"href":"http:\/\/192.168.1.213:8088\/wp-json\/wp\/v2\/posts\/1108\/revisions\/1467"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/192.168.1.213:8088\/wp-json\/wp\/v2\/media\/1403"}],"wp:attachment":[{"href":"http:\/\/192.168.1.213:8088\/wp-json\/wp\/v2\/media?parent=1108"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/192.168.1.213:8088\/wp-json\/wp\/v2\/categories?post=1108"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/192.168.1.213:8088\/wp-json\/wp\/v2\/tags?post=1108"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}