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Dockerfile for multistage build of spring boot application using maven with SonarQube and proxy support https://blog.pavelsklenar.com/spring-boot-run-and-build-in-docker/
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| ### BUILD image | |
| FROM maven:3-jdk-11 as builder | |
| #Copy Custom Maven settings | |
| #COPY settings.xml /root/.m2/ | |
| # create app folder for sources | |
| RUN mkdir -p /build | |
| WORKDIR /build | |
| COPY pom.xml /build | |
| #Download all required dependencies into one layer | |
| RUN mvn -B dependency:resolve dependency:resolve-plugins | |
| #RUN mvn dependency:resolve-plugins | |
| #Copy source code | |
| COPY src /build/src | |
| # Build application | |
| RUN mvn package | |
| FROM openjdk:11-slim as runtime | |
| EXPOSE 8080 | |
| #Set app home folder | |
| ENV APP_HOME /app | |
| #Possibility to set JVM options (https://www.oracle.com/technetwork/java/javase/tech/vmoptions-jsp-140102.html) | |
| ENV JAVA_OPTS="" | |
| #Create base app folder | |
| RUN mkdir $APP_HOME | |
| #Create folder to save configuration files | |
| RUN mkdir $APP_HOME/config | |
| #Create folder with application logs | |
| RUN mkdir $APP_HOME/log | |
| VOLUME $APP_HOME/log | |
| VOLUME $APP_HOME/config | |
| WORKDIR $APP_HOME | |
| #Copy executable jar file from the builder image | |
| COPY --from=builder /build/target/*.jar app.jar | |
| ENTRYPOINT [ "sh", "-c", "java $JAVA_OPTS -Djava.security.egd=file:/dev/./urandom -jar app.jar" ] | |
| #Second option using shell form: | |
| #ENTRYPOINT exec java $JAVA_OPTS -jar app.jar $0 $@ |
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