How do I get OpenJDK 11 from Maven?

Question

I'm building a Docker web application and I need to assemble a Docker image with the following packages, in order:

• openjdk-11+28_linux-x64_bin.tar.gz
• apache-tomcat-9.0.27.tar.gz -- In Maven as: org.apache.tomcat:tomcat:9.0.27
• jcc-11.5.0.0.jar -- In Maven as: com.ibm.db2:jcc:11.5.0.0
• my-app.tar.gz -- This is build by Maven.

So, in the docker image I first install Java, then Tomcat, then the JDBC driver for DB2, and finally my web app on top of it. I can get all of them from Maven, except the first one: the OpenJDK.

If it's not in Maven, do I need to include the whole OpenJDK 11 in my git repository, so it's there for the docker build?

Maybe, I'm doing this the wrong way, but I want to make sure the docker build works in any machine it runs. I'm thinking of CI/CD.

Answer 1

You can use the Docker image for OpenJDK 11

FROM openjdk:11

Or you can use Alpine base image if you need a smaller OpenJDK 11 image

FROM openjdk:11-alpine

In this way you'll already have the OpenJDK 11 in your container, without to use Maven to get it.