Create Docker container with both Java and Node.js

Question

I am not sure why I expected this to work:

 # Dockerfile    
 FROM node:6
 FROM java:8

but it doesn't really work - looks like the first command is ignored, and second command works.

Is there a straightforward way to install both Node.js and Java in a Docker container?

Ultimately the problem I am trying to solve is that I am getting an ENOENT error when running Selenium Webdriver -

[20:38:50] W/start - Selenium Standalone server encountered an error: Error: spawn java ENOENT

And right now I assume it's because Java is not installed in the container.

Answer 1

The best way for you is to take java (which is officially deprecated and it suggests you use openjdk image) and install node in it.

So, start with

FROM openjdk:latest

This will use the latest openjdk image, which is 8u151 at this time. Then install node and other dependencies you might need:

RUN apt-get install -y curl \
  && curl -sL https://deb.nodesource.com/setup_9.x | bash - \
  && apt-get install -y nodejs \
  && curl -L https://www.npmjs.com/install.sh | sh

You might want to install things like grunt afterwards, so this might come in handy as well.

RUN npm install -g grunt grunt-cli

In total you will get the following Dockerfile:

FROM openjdk:latest

RUN apt-get install -y curl \
  && curl -sL https://deb.nodesource.com/setup_9.x | bash - \
  && apt-get install -y nodejs \
  && curl -L https://www.npmjs.com/install.sh | sh \
RUN npm install -g grunt grunt-cli

You may clone the Dockerfile from my gitlab repo here