I have two containers - "node.js" and "mysql", both set up to be on the same network. Doing docker-compose up -d starts the containers and they are working, I can access "node.js" and "mysql" respectively from the outside.

But I can't connect to "mysql" from "node.js". Am I doing something wrong here?

version: '3' services: app: build: context: . dockerfile: Dockerfile env_file: .env volumes: - .:/app ports: - ${APP_PORT}:${APP_PORT} depends_on: - mysql networks: - appnet mysql: image: mysql:8.0 restart: always env_file: .env environment: - MYSQL_ROOT_HOST=% - MYSQL_ROOT_PASSWORD=${DB_PASSWORD} - MYSQL_DATABASE=${DB_NAME} - MYSQL_USER=${DB_USERNAME} - MYSQL_PASSWORD=${DB_PASSWORD} volumes: - mysql-data:/var/lib/mysql ports: - ${DB_PORT}:${DB_PORT} networks: - appnet networks: appnet: volumes: mysql-data:

To connect to MySQL, I used the "knex.js" package, which works fine on my local machine (same docker configuration)