Pass Environment Variables

When running dockerized exec COMMAND, there are two ways to pass environment variables to COMMAND.

In the Command Line

The easiest way is to prepend the COMMAND with them:

dockerized exec FOO=1 BAR=2 COMMAND

For example

> dockerized exec FOO=1 BAR=2 env
...
FOO=1
BAR=2

Using Docker-Compose

You can define environment variables in the .dockerized/docker-compose.dockerized.yml file.

This is useful if you keep passing the same variables over and over, or if you don't want to have them present in the command line (for example because it is logged).

Here is an example:

 version: '2'
 services:
   dockerized:
     build:
       context: .
       dockerfile: Dockerfile.dockerized
     entrypoint:
       - sh
       - '-c'
     environment:
       - FOO=1  # specify a value
       - SECRET # pass the variable from the host environment