Question 80837 in Docker Question posted in
The official documentation can be found here.

Dockerfile not reading values from the .env file

In my .env file I have setup the USERNAME:
USERNAME=myuser

When I do a docker compose build, it is unable to resolve the placeholders $USERNAME in the Dockerfile.

My Dockerfile:

FROM busybox:latest as build
ENV USERNAME=$USERNAME

.
.
.

How can I achieve this

Tags:

2

Answers


  1. Chosen as BEST ANSWER
    0

    I figured out the reason - the .env file must reside in the same folder as docker-compose.yml


  2. 0

    Try this:

    docker-compose.yml

    version: '3.5'

services:
    container:
        build:
            context: .
            args:
                USERNAME: ${USERNAME} # from .env file
        env_file:
            - .env

    Dockerfile

    # docker-compose args
ARG USERNAME 
...

    .env

    USERNAME=value

    If you not use .env file, just remove env_file properties and set env in args.

    Login or Signup to reply.
Please signup or login to give your own answer.

Back To Top
Search