chore(mr): support fine graded multi-stages #2
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Signed-off-by: Stephan Linz <[email protected]>
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In preparation for a differentiated CI pipeline, the Dockerfile
can now be used with finer-grained multi-stages to build multi-
platform Docker images.
ubuntu:noble-20240904.1
|
`–[base]
| - Ubuntu system package upgrades
| - Ubuntu APT software management utils
| - Ubuntu localization for 'en_US.UTF-8' and 'de_DE.UTF-8'
| - TSN workspace user in '/home/tsn' ('UID=1005' and 'GID=205')
| - Set main entry point to '/bin/bash'
| - Switch to TSN workspace user in '/home/tsn'
|
`–[asdf-all]
| - Ubuntu system packages for ASDF
| - Install ASDF
| - Install ASDF Plugin Manager
| - Switch to TSN workspace user in '/home/tsn'
|
+–[asdf-amd64]
| | - Empty, nothing to do.
,–:–´
| |
| +–[asdf-arm]
| | | - Empty, nothing to do.
+–:–´
| |
| +–[asdf-arm64]
| | | - Empty, nothing to do.
+–:–´
| |
| +–[asdf-riscv64]
| | | - Empty, nothing to do.
+–:–´
| |
| +–[asdf-ppc64le]
| | | - Empty, nothing to do.
+–:–´
| |
| `–[asdf-s390x]
| | - Empty, nothing to do.
+–––´
|
`–[asdf]:
- Verify ASDF, execute CLI.
- Verify ASDF Plugin Manager, execute CLI.
Signed-off-by: Stephan Linz <[email protected]>
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Only the instructions RUN, COPY, and ADD create layers. Other instructions create temporary intermediate images, and do not increase the size of the build (number of layers). However, there is a limit of 127 layers in the final image. It is therefore recommended to offer Dockerfiles in which the number of layers created has been reduced. Always combine RUN apt-get update with apt-get install in the same RUN statement is a common way to do so. For details, see: - https://emmer.dev/blog/reducing-docker-layers - https://docs.docker.com/build/building/best-practices/#run Test with: docker inspect tiacsys/tsn-asdf-ws:local | \ jq '.[0].RootFS.Layers[]' | wc -l Possible to squash: docker image save tiacsys/tsn-asdf-ws:local | \ docker import - tiacsys/tsn-asdf-ws:squash && \ docker inspect tiacsys/tsn-asdf-ws:squash | \ jq '.[0].RootFS.Layers[]' | wc -l Signed-off-by: Stephan Linz <[email protected]>
Use our own reusable GitHub workflows for Docker from: - tiacsys/github-workflows/.github/workflows/docker-stages.yml@v1 - tiacsys/github-workflows/.github/workflows/docker-retention.yml@v1 Use our own reusable GitHub workflows for Retry on Failure from: - tiacsys/github-workflows/.github/workflows/retry-workflow.yml@v1 Signed-off-by: Stephan Linz <[email protected]>
Signed-off-by: Stephan Linz <[email protected]>
Use 'latest' image from https://hub.docker.com/_/ubuntu with the specific tag 'noble-20241011'. Signed-off-by: Stephan Linz <[email protected]>
Signed-off-by: Stephan Linz <[email protected]>
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The Dockerfile now provides two more specific stages for the basic setup and the ASDF installation. These follow a fixed sequence that is guaranteed to be kept by restructuring the GitHub workflow. Support for multiple platforms is retained and makes use of the Docker build cache on the Docker registry where possible.