java - Docker: Combine multiple images

Question

Is it possible with Docker to combine two images into one?

Like this here:

genericA --
            
             ---> specificAB
            /
genericB --

For example there's an image for Java and an image for MySQL.

I'd like to have an image with Java and MySQL.

question from:https://stackoverflow.com/questions/65660287/use-features-from-different-base-dockers

Answer 1

No, you can only inherit from one image.

You probably don't want Java and MySQL in the same image as it's more idiomatic to have a single component in a container i.e. create a separate MySQL container and link it to the Java container rather than put both into the same container.

However, if you really must have them in the same image, write a Dockerfile with Java as the base image (FROM statement) and install MySQL in the Dockerfile. You should be able to largely copy the statements from the official MySQL Dockerfile.