Update Docker build configuration for GitHub Packages

- Add build arguments for GITHUB_ACTOR and GITHUB_TOKEN
- Configure Maven to use GitHub Packages with provided token

Author: nomad4tech

.github/workflows/docker-publish.yml

@@ -33,4 +33,7 @@ jobs:
         with:
           context: .
           push: true
-          tags: ${{ steps.meta.outputs.tags }}
+          tags: ${{ steps.meta.outputs.tags }}
+          build-args: |
+            GITHUB_ACTOR=${{ github.actor }}
+            GITHUB_TOKEN=${{ secrets.GITHUB_TOKEN }}

Dockerfile

@@ -12,8 +12,16 @@ RUN npm run build
 # ─── Stage 2: Build backend ────────────────────────────────────────────────
 FROM maven:3.9-eclipse-temurin-17-alpine AS backend-builder
 
+ARG GITHUB_ACTOR
+ARG GITHUB_TOKEN
+
 WORKDIR /app
 
+# Configure Maven to use GitHub Packages if GITHUB_TOKEN is provided
+RUN if [ -n "${GITHUB_TOKEN}" ]; then \
+      mkdir -p /root/.m2 && printf '<settings>\n  <servers>\n    <server>\n      <id>github</id>\n      <username>%s</username>\n      <password>%s</password>\n    </server>\n  </servers>\n</settings>\n' "${GITHUB_ACTOR}" "${GITHUB_TOKEN}" > /root/.m2/settings.xml; \
+    fi
+
 COPY pom.xml ./
 RUN mvn dependency:go-offline -q