Files
devops-lib-gcp/resources/com/homelab/java-Dockerfile
T
Mukul SharmaandClaude Opus 5 6d743cbe48 Make the registry hostname configurable and drop the CA mount
buildDocker.groovy hardcoded harbor.35.238.248.203.nip.io as the push
target, so the registry could not move without editing this shared library
and every consumer moving in the same commit. It now reads
config.harbor_registry, whose default lives in homelabPipeline.groovy
beside harbor_project and every other key.

The stage errors rather than defaulting when the value is missing. Carrying
a second copy of the literal would leave two defaults free to disagree, and
an unset value would otherwise build an image named "null/<project>/<repo>"
— which docker accepts as a hostname and then fails to resolve, pointing
nowhere near the cause.

The dind pod no longer mounts the registry CA. That mount existed because
the registry was a nip.io name, which no public CA will issue for, so
cert-manager signed Harbor from a private CA; the node pool was told to
trust it for pulls, but a push comes from dockerd inside the build pod,
which has its own trust store. harbor.infra.deployshed.com carries a Let's
Encrypt certificate that both already trust, so the mount, its volume and
the whole arrangement go away rather than being repointed.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LEsTefWWifp4ikvhHF5s6N
2026-09-17 09:31:32 +05:30

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# Fallback only — see go-Dockerfile's header comment for the general
# rule, including the Harbor base-images sourcing (also applies here).
# Simplified from the real java-Dockerfile: no JFrog artifact
# resolution, no Homelab-internal Maven mirror. Assumes a standard Maven
# repo producing a single runnable jar under target/. Switched both
# stages from their Debian defaults to the -alpine variant — smaller,
# still keeps a shell (not distroless). Maven itself still reaches out
# to Maven Central for plugins/dependencies during the build regardless
# of base image — this only removes the Docker Hub dependency for the
# base image layer, not package-registry traffic during the build.
FROM harbor.infra.deployshed.com/base-images/maven:3-eclipse-temurin-${version}-alpine AS build
WORKDIR /src
COPY pom.xml .
RUN mvn -B dependency:go-offline
COPY . .
RUN mvn -B package -DskipTests
FROM harbor.infra.deployshed.com/base-images/eclipse-temurin:${version}-jre-alpine
WORKDIR /app
COPY --from=build /src/target/*.jar app.jar
EXPOSE 8080
ENTRYPOINT ["java", "-jar", "app.jar"]