48 lines
1.1 KiB
Docker
48 lines
1.1 KiB
Docker
# =======================
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# Builder stage
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# =======================
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FROM maven:3.8.5-eclipse-temurin-17 AS builder
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WORKDIR /workdir/server
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# Copy only pom.xml first for better layer caching
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COPY pom.xml .
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# Download dependencies with optimization flags
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RUN mvn dependency:resolve dependency:resolve-plugins -B -T 1C
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# Copy source code
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COPY src ./src
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# Build the application
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RUN mvn package -B -T 1C -DskipTests -Dmaven.javadoc.skip=true
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# Verify the JAR was created and rename it to a consistent name
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RUN ls -la target/ && \
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mv target/*.jar target/app.jar
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# =======================
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# Runtime stage
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# =======================
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FROM eclipse-temurin:17-jre-focal
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# Expose port
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EXPOSE 8080
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# Create app and uploads directories
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RUN mkdir -p /app && \
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mkdir -p /app/uploads && \
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chmod 755 /app/uploads
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# Set working directory
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WORKDIR /app
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# Copy the JAR with a consistent name
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COPY --from=builder /workdir/server/target/app.jar /app/app.jar
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# Create volume for uploads
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VOLUME ["/app/uploads"]
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# Use exec form of ENTRYPOINT (not shell form) for proper signal handling
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# and environment variable passing
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ENTRYPOINT ["java", "-jar", "/app/app.jar"] |