javadockerdockerfile

Java version from the dockerfile

I want to know the java version of the application from the dockerfile. The first line of the dockerfile says : FROM adoptopenjdk/openjdk11:alpine . What is the full version of java here?

Solution

  • Option 1

    the most precise way to find out would be to actually build that dockerfile:

    docker build -t mycontainer .

    then run it with the bash command:

    docker run mycontainer -it bash

    and then check java version:

    java -version

    Option 2

    Alternatively you can just look up on the docker page of the image you are about to use adoptopenjdk/openjdk11:alpine, which a simple google search would bring you to

    There you would see the version being used is 11.0.11_9, but this might/will change in future releases