Having trouble setting .env variables in docker compose file

Question

I'm trying to follow Docker docs and SO suggestions, but still getting "variable not set" errors on just trying to "docker-compose up db". Can someone please check my .env and yaml file? Both are in the same directory but it doesn't seem yml is reading .env???

.env:

FS_NAME=MY_BLOG_NAME
FS_REGION=us-east-2
DB_HOST=localhost
DB_USER=postgres
DB_PASS=$$323MY_PASS$&84
DB_NAME=postgres

docker-compose.yml:

version: '3.7'
volumes:
    db_data:

x-shared_environment: &shared_environment
   LOG_LEVEL: ${LOG_LEVEL:-debug}
   DATABASE_HOST: ${DB_HOST}
   DATABASE_NAME: ${DB_NAME}
   DATABASE_USERNAME: ${DB_USERNAME}
   DATABASE_PASSWORD: ${DB_PASSWORD}

services:
  app:
    image: MY_BLOG_NAME:latest
    build:
      context: .
    environment:
      <<: *shared_environment
      FS_NAME: ${FS_NAME}
      FS_REGION: ${FS_REGION}
    depends_on:
    - db
    ports:
      - '8080:8080'
      
db:
    image: postgres:12.2-apline
    volumes:
        -db_data/var/lib/postrgresql/data/pgdata
    environment:
        PGDATA: /var/lib/postgresql/data/pgdata
        POSTGRES_USER: {DB_USERNAME}
        POSTGRESS_PASSWORD: {DB_PASSWORD}
        POSTGRES_DB: {DB_NAME}
        POSTGRESS_PASSWORD: {DB_PASSWORD}
    ports:
        -'5432:5432'

noam steiner · Accepted Answer · 2020-07-17 18:59:18Z

1

You need to specify the directory of your .env file, add env_file configuration for each service.

https://docs.docker.com/compose/environment-variables/

For exapmle:

db:
    image: postgres:12.2-apline
    volumes:
        -db_data/var/lib/postrgresql/data/pgdata
    env_file: 
        - ./.env
    environment:
        PGDATA: /var/lib/postgresql/data/pgdata
        POSTGRES_USER: {DB_USERNAME}
        POSTGRESS_PASSWORD: {DB_PASSWORD}
        POSTGRES_DB: {DB_NAME}
        POSTGRESS_PASSWORD: {DB_PASSWORD}
    ports:
        -'5432:5432'

answered Jul 17, 2020 at 18:59

noam steiner

4,4844 gold badges31 silver badges47 bronze badges

Sign up to request clarification or add additional context in comments.

4 Comments

DIV Over a year ago

I actually got the env variables right (but also added ur suggestion). Once env variables fixed... my final error on running docker-compose up db is: ``` ERROR: The Compose file './docker-compose.yml' is invalid because: Invalid top-level property "db". Valid top-level sections for this Compose file are: version, services etc.... NOTE: that to get the env variables working correctly I changed my original version from 3.7 to 3.8 (to support my latest docker v install). Any idea what the top property db error is?

DIV Over a year ago

note: I did not add a separate env_file for the services because my .env file has all variables for FS, DB and AWS. So " - ./.env" should suffice? any thoughts on the top level db error?

noam steiner Over a year ago

You can't define the env_file at the top level of the file, it should be configured for each service seperatly stackoverflow.com/questions/48154093/…

DIV Over a year ago

I figured it out... "db" needed to be indented... thx.for the help along the way. 😊

Collectives™ on Stack Overflow

Having trouble setting .env variables in docker compose file

1 Answer 1

4 Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

4 Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related