chore(dockerfile): reduce packaging time #3230
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The packages aren't updated frequently, so the content of the image layer usually remains unchanged. To avoid unnecessary rebuilding of this layer, copy the longhorn-manager binaries after installing the packages. Longhorn 8744 Signed-off-by: Derek Su <[email protected]>
WalkthroughThe changes in the Dockerfile involve modifications to the handling of the Changes
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🧹 Outside diff range and nitpick comments (2)
package/Dockerfile (2)
21-22: Good addition, minor suggestion for consistencyThis change is consistent with the optimization strategy, copying
launch-managerandnsmounterafter package installation to prevent unnecessary rebuilds. The location (/usr/local/sbin/) is appropriate for system binaries.For consistency with the previous COPY command, consider specifying the architecture for these binaries as well, if they are architecture-specific. If they are not, please clarify this in a comment. For example:
# These binaries are architecture-independent COPY package/launch-manager package/nsmounter /usr/local/sbin/or
COPY package/launch-manager-${ARCH} package/nsmounter-${ARCH} /usr/local/sbin/
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1-24: Effective optimization, consider further improvementsThe changes in this Dockerfile effectively address the PR objective of reducing packaging time. By moving the COPY commands for binaries after package installation, we prevent unnecessary rebuilds of unchanged layers, which is particularly beneficial for the frequently updated
longhorn-managerbinary.These optimizations will significantly reduce build times, especially in CI/CD pipelines where builds are frequent. The unchanged parts of the Dockerfile maintain the necessary setup for the container, ensuring that the optimizations don't compromise functionality.
To further optimize the build process, consider the following suggestions:
Use multi-stage builds to separate the build environment from the runtime environment. This can significantly reduce the final image size.
Implement caching strategies for package installations. For example, you could copy only the package list first, run the update and install, and then copy the rest of the files. This way, package installation layer will only be rebuilt if the package list changes.
Consider using a smaller base image if possible, which could further reduce build and pull times.
Would you like assistance in implementing any of these further optimizations?
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package/Dockerfile (1)
19-19: Excellent optimization for build processThis change aligns perfectly with the PR objective of reducing packaging time. By copying the
longhorn-managerbinary after package installation, we prevent unnecessary rebuilds of unchanged layers. The use of${ARCH}ensures the correct binary is copied for the target platform (amd64 or arm64).
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@mergify backport v1.7.x v1.6.x |
✅ Backports have been created
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Which issue(s) this PR fixes:
Issue longhorn/longhorn#8744
What this PR does / why we need it:
The packages aren't updated frequently, so the content of the image layer usually remains unchanged.
To avoid unnecessary rebuilding of this layer, copy the longhorn-manager binaries after installing the packages.
Special notes for your reviewer:
Additional documentation or context