Dockerfile

#Multi-Stage build

#Build application stage
#We need maven.
FROM maven:3.5.3-jdk-10
ARG JAVA_AGENT_BRANCH=master
ARG JAVA_AGENT_REPO=elastic/apm-agent-java

WORKDIR /usr/src/java-app

#build the application
ADD . /usr/src/java-code
WORKDIR /usr/src/java-code/opbeans
RUN mvn -q -B package -DskipTests
RUN cp -v /usr/src/java-code/opbeans/target/*.jar /usr/src/java-app/app.jar

#build te agent
WORKDIR /usr/src/java-agent-code
RUN curl -L https://github.com/$JAVA_AGENT_REPO/archive/$JAVA_AGENT_BRANCH.tar.gz | tar --strip-components=1 -xz
RUN mvn -q -B package -DskipTests
RUN export JAVA_AGENT_BUILT_VERSION=$(mvn -q -Dexec.executable="echo" -Dexec.args='${project.version}' --non-recursive org.codehaus.mojo:exec-maven-plugin:1.3.1:exec) \
    && cp -v /usr/src/java-agent-code/elastic-apm-agent/target/elastic-apm-agent-${JAVA_AGENT_BUILT_VERSION}.jar /usr/src/java-app/elastic-apm-agent.jar


#Run application Stage
#We only need java

FROM openjdk:10

RUN export
WORKDIR /app
COPY --from=0 /usr/src/java-app/*.jar ./

CMD java -javaagent:/app/elastic-apm-agent.jar -Dspring.profiles.active=customdb\
                                        -Dserver.port=${OPBEANS_SERVER_PORT:-3002}\
                                        -Dspring.datasource.url=${DATABASE_URL:-jdbc:postgresql://postgres/opbeans?user=postgres&password=verysecure}\
                                        -Dspring.datasource.driverClassName=${DATABASE_DRIVER:-org.postgresql.Driver}\
                                        -Dspring.jpa.database=${DATABASE_DIALECT:-POSTGRESQL}\
                                        -jar /app/app.jar