Docker Community Forums

Share and learn in the Docker community.

About building image for web application

Hi,
I’m new to docker. I’m trying to create image with Ubuntu, Java and Apache. What I did is I created an Image as below

FROM ubuntu:16.04
FROM jdk:8
FROM apache

My question is, is it right way to create an Image, because the images (Jdk and apache) which I got from docker hub may be built from a different Ubuntu version and I may get conflicts or they don’t have any OS installed in it or it may not behave as intended?

Please suggest a solution.

Thanks

You are misusing FROM. It is not additive. You can only have one base image. Your example switches between 3 base images; it doesn’t combine them.

You probably want something like:

FROM ubuntu:16.04
RUN apt-get update
RUN apt-get install -q -y openjdk-8-jdk apache2
1 Like

In addition to what coder98103 says (which is completely correct), I generally try to separate my middle-ware from the web-server, whenever possible.

1 Like

Thanks for your reply.