add gitlab ci docker image creation, premade

2022-01-19 15:16:01 +01:00
parent 86de99d860
commit 6845114ac8
1 changed files with 81 additions and 0 deletions
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@ -0,0 +1,81 @@
+# do not use "latest" here, if you want this to work in the future
+image: docker:20
+
+stages:
+  - build
+  - push
+
+variables:
+  # fill those if you have a proxy in your environment
+  http_proxy: ""
+  https_proxy: ""
+  no_proxy: ""
+
+# Use this if your GitLab runner does not use socket binding
+# services:
+#   - docker:dind
+
+before_script:
+  # docker login asks for the password to be passed through stdin for security
+  # we use $CI_REGISTRY_PASSWORD here which is a special variable provided by GitLab
+  # https://docs.gitlab.com/ce/ci/variables/predefined_variables.html
+  - echo -n $CI_REGISTRY_PASSWORD | docker login -u $CI_REGISTRY_USER --password-stdin $CI_REGISTRY
+
+Build:
+  stage: build
+  script:
+    # fetches the latest image (not failing if image is not found)
+    - docker pull $CI_REGISTRY_IMAGE:latest || true
+    # builds the project, passing proxy variables, using OCI labels
+    # notice the cache-from, which is going to use the image we just pulled locally
+    # the built image is tagged locally with the commit SHA, and then pushed to
+    # the GitLab registry
+    - >
+      docker build
+      --pull
+      --build-arg http_proxy=$http_proxy
+      --build-arg https_proxy=$https_proxy
+      --build-arg no_proxy=$no_proxy
+      --cache-from $CI_REGISTRY_IMAGE:latest
+      --label "org.opencontainers.image.title=$CI_PROJECT_TITLE"
+      --label "org.opencontainers.image.url=$CI_PROJECT_URL"
+      --label "org.opencontainers.image.created=$CI_JOB_STARTED_AT"
+      --label "org.opencontainers.image.revision=$CI_COMMIT_SHA"
+      --label "org.opencontainers.image.version=$CI_COMMIT_REF_NAME"
+      --tag $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA
+      .
+    - docker push $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA
+
+# Here, the goal is to tag the "master" branch as "latest"
+Push latest:
+  variables:
+    # We are just playing with Docker here.
+    # We do not need GitLab to clone the source code.
+    GIT_STRATEGY: none
+  stage: push
+  only:
+    # Only "master" should be tagged "latest"
+    - master
+  script:
+    # Because we have no guarantee that this job will be picked up by the same runner
+    # that built the image in the previous step, we pull it again locally
+    - docker pull $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA
+    # Then we tag it "latest"
+    - docker tag $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA $CI_REGISTRY_IMAGE:latest
+    # Annnd we push it.
+    - docker push $CI_REGISTRY_IMAGE:latest
+
+# Finally, the goal here is to Docker tag any Git tag
+# GitLab will start a new pipeline everytime a Git tag is created, which is pretty awesome
+Push tag:
+  variables:
+    # Again, we do not need the source code here. Just playing with Docker.
+    GIT_STRATEGY: none
+  stage: push
+  only:
+    # We want this job to be run on tags only.
+    - tags
+  script:
+    - docker pull $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA
+    - docker tag $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA $CI_REGISTRY_IMAGE:$CI_COMMIT_REF_NAME
+    - docker push $CI_REGISTRY_IMAGE:$CI_COMMIT_REF_NAME