I get the below error when I run docker-compose up, any pointers why I am getting this error
service "mysqldb-docker" refers to undefined volume mysqldb: invalid compose project
Also, is there a way to pass the $ENV value in CLI to docker-compose up , currently I have a ENV variable that specified dev, uat or prod that I use to specify the db name. Are there better alternatives to do this other than create a .env file explicitly for this
version: '3.8'
services:
mysqldb-docker:
image: '8.0.27'
restart: 'unless-stopped'
ports:
- "3309:3306"
environment:
- MYSQL_ROOT_PASSWORD=root
- MYSQL_PASSWORD=root
- MYSQL_DATABASE=reco-tracker-$ENV
volumes:
- mysqldb:/var/lib/mysql
reco-tracker-docker:
image: 'reco-tracker-docker:v1'
ports:
- "8083:8083"
environment:
- SPRING_DATASOURCE_USERNAME=root
- SPRING_DATASOURCE_PASSWORD=root
- SPRING_DATASOURCE_URL="jdbc:mysql://mysqldb-docker:3309/reco-tracker-$ENV"
depends_on: [mysqldb-docker]
2
Answers
You must define
volumes
at the top level like this:You can pass environment variables from your shell straight through to a service’s containers with the ‘environment’ key by not giving them a value
https://docs.docker.com/compose/environment-variables/#pass-environment-variables-to-containers
but from my tests you cant write $ENV in the compose file and expect it to read your env
for this you need to call docker-compose that way :
see this : https://docs.docker.com/compose/environment-variables/#set-environment-variables-with-docker-compose-run