build: update Dockerfile to use alpine variant and improve user setup… #2319
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Summary of Changes
Hello @robfrank, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!
This pull request focuses on optimizing the build process and resulting artifacts by transitioning the Docker image to a more lightweight Alpine-based Java runtime and refining the user setup within the container. Concurrently, it adjusts a Maven dependency's scope to ensure a library is only utilized during testing, thereby contributing to a more streamlined production build.
Highlights
- Dockerfile Base Image Optimization: The base image for the Dockerfile (
package/src/main/docker/Dockerfile) has been updated fromeclipse-temurin:21to the more compact and efficienteclipse-temurin:21-alpinevariant, aiming for smaller image sizes and faster deployments. - Dockerfile User Setup and Package Management: The method for creating the
arcadedbuser in the Dockerfile has been changed fromuseraddtoadduser -D -h /home/arcadedb -s /bin/sh arcadedb, which is more suitable for Alpine Linux. Additionally, a commandapk -U upgradewas added to ensure all Alpine packages are up-to-date within the container. - Dockerfile Readability Improvement: A blank line was inserted before the
EXPOSEdirective in the Dockerfile to enhance its overall readability and structure. - Maven Dependency Scope Refinement: The
json-pathdependency inpom.xmlhas been explicitly scoped totest. This ensures that the dependency is only included during the testing phase and is excluded from production builds, contributing to a leaner final artifact.
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Code Review
This pull request makes several good improvements. Switching to an Alpine-based Docker image is excellent for reducing image size. The user setup is now more idiomatic for Alpine, and updating packages is a good security measure. The dependency scope adjustment in pom.xml is also a great change to keep the production build lean. I have one suggestion for the Dockerfile to further optimize the image by merging RUN commands, which will reduce the number of layers.
| RUN apk -U upgrade && rm -rf /var/cache/apk/* | ||
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| RUN adduser -D -h /home/arcadedb -s /bin/sh arcadedb |
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To optimize the Docker image and reduce the number of layers, it's a best practice to chain related RUN commands together. Combining the package upgrade and user creation into a single RUN instruction will result in a smaller and more efficient image layer.
RUN apk -U upgrade && rm -rf /var/cache/apk/* && adduser -D -h /home/arcadedb -s /bin/sh arcadedb
Coverage summary from CodacySee diff coverage on Codacy
Coverage variation details
Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: Diff coverage details
Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: See your quality gate settings Change summary preferences |
This pull request includes updates to the
Dockerfileandpom.xmlto improve the base image, streamline user creation in the container, and refine dependency scopes.Dockerfile updates:
package/src/main/docker/Dockerfilefromeclipse-temurin:21toeclipse-temurin:21-alpine, which is smaller and more efficient.useraddwithadduserfor creating thearcadedbuser and added a command to upgrade Alpine packages, improving compatibility and security.EXPOSEdirective, enhancing readability.Dependency scope refinement:
json-pathdependency totestinpom.xml, ensuring it is only included during testing and not in production builds.## Related issuesA list of issues either fixed, containing architectural discussions, otherwise relevant
for this Pull Request.
Additional Notes
#2316
Checklist
mvn clean packagecommand