39 lines
1.5 KiB
YAML
39 lines
1.5 KiB
YAML
docker-build:
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# docker-in-docker: the runner uses docker from inside a docker container to execute the CI-jobs
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image: docker:20 # provides the docker toolset (but without an active daemon)
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stage: build
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rules:
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- changes: # only run CI when these files have changed
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- "*.py"
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- "Dockerfile"
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- ".gitlab-ci.yml"
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# services configure images that run during jobs linked to the image (above)
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services:
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- docker:dind # dind build on docker and starts up the dockerdaemon (docker itself doesn't do that), which is needed to call docker build etc.
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before_script:
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# docker login asks for the password to be passed through stdin for security
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- docker login -u $CI_REGISTRY_USER -p "$CI_REGISTRY_PASSWORD" $CI_REGISTRY
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script:
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# fetches the latest image from this projects registry to use as cache (not failing if image is not found)
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- docker pull $CI_REGISTRY_IMAGE:latest || true
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# build
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- >
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docker build
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--pull
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--cache-from $CI_REGISTRY_IMAGE:latest
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--label "org.opencontainers.image.title=$CI_PROJECT_TITLE"
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--label "org.opencontainers.image.url=$CI_PROJECT_URL"
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--label "org.opencontainers.image.created=$CI_JOB_STARTED_AT"
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--label "org.opencontainers.image.revision=$CI_COMMIT_SHA"
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--label "org.opencontainers.image.version=$CI_COMMIT_REF_NAME"
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--tag $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA
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.
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# tag and push
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- docker tag $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA $CI_REGISTRY_IMAGE:latest
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- docker push $CI_REGISTRY_IMAGE:latest
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