frappe_docker/docs/06-migration/01-migrate-from-multi-image-setup.md

Migrate from multi-image setup

All the containers now use same image. Use frappe/erpnext instead of frappe/frappe-worker, frappe/frappe-nginx , frappe/frappe-socketio , frappe/erpnext-worker and frappe/erpnext-nginx.

Now you need to specify command and environment variables for following containers:

Frontend

For frontend service to act as static assets frontend and reverse proxy, you need to pass nginx-entrypoint.sh as container command and BACKEND and SOCKETIO environment variables pointing {host}:{port} for gunicorn and websocket services. Check environment variables

Now you only need to mount the sites volume at location /home/frappe/frappe-bench/sites. No need for assets volume and asset population script or steps.

Example change:

# ... removed for brevity
frontend:
  image: frappe/erpnext:${ERPNEXT_VERSION:?ERPNext version not set}
  command:
    - nginx-entrypoint.sh
  environment:
    BACKEND: backend:8000
    SOCKETIO: websocket:9000
  volumes:
    - sites:/home/frappe/frappe-bench/sites
# ... removed for brevity

Websocket

For websocket service to act as socketio backend, you need to pass ["node", "/home/frappe/frappe-bench/apps/frappe/socketio.js"] as container command

Example change:

# ... removed for brevity
websocket:
  image: frappe/erpnext:${ERPNEXT_VERSION:?ERPNext version not set}
  command:
    - node
    - /home/frappe/frappe-bench/apps/frappe/socketio.js
# ... removed for brevity

Configurator

For configurator service to act as run once configuration job, you need to pass ["bash", "-c"] as container entrypoint and bash script inline to yaml. There is no configure.py in the container now.

Example change:

# ... removed for brevity
configurator:
  image: frappe/erpnext:${ERPNEXT_VERSION:?ERPNext version not set}
  restart: "no"
  entrypoint:
    - bash
    - -c
  command:
    - >
      bench set-config -g db_host $$DB_HOST;
      bench set-config -gp db_port $$DB_PORT;
      bench set-config -g redis_cache "redis://$$REDIS_CACHE";
      bench set-config -g redis_queue "redis://$$REDIS_QUEUE";
      bench set-config -gp socketio_port $$SOCKETIO_PORT;      
  environment:
    DB_HOST: db
    DB_PORT: "3306"
    REDIS_CACHE: redis-cache:6379
    REDIS_QUEUE: redis-queue:6379
    SOCKETIO_PORT: "9000"
# ... removed for brevity

Site Creation

For create-site service to act as run once site creation job, you need to pass ["bash", "-c"] as container entrypoint and bash script inline to yaml. Make sure to use --mariadb-user-host-login-scope=% as upstream bench is installed in container.

The WORKDIR has changed to /home/frappe/frappe-bench like bench setup we are used to. So the path to find common_site_config.json has changed to sites/common_site_config.json.

Example change:

# ... removed for brevity
create-site:
  image: frappe/erpnext:${ERPNEXT_VERSION:?ERPNext version not set}
  restart: "no"
  entrypoint:
    - bash
    - -c
  command:
    - >
      wait-for-it -t 120 db:3306;
      wait-for-it -t 120 redis-cache:6379;
      wait-for-it -t 120 redis-queue:6379;
      export start=`date +%s`;
      until [[ -n `grep -hs ^ sites/common_site_config.json | jq -r ".db_host // empty"` ]] && \
        [[ -n `grep -hs ^ sites/common_site_config.json | jq -r ".redis_cache // empty"` ]] && \
        [[ -n `grep -hs ^ sites/common_site_config.json | jq -r ".redis_queue // empty"` ]];
      do
        echo "Waiting for sites/common_site_config.json to be created";
        sleep 5;
        if (( `date +%s`-start > 120 )); then
          echo "could not find sites/common_site_config.json with required keys";
          exit 1
        fi
      done;
      echo "sites/common_site_config.json found";
      bench new-site --mariadb-user-host-login-scope=% --admin-password=admin --db-root-password=admin --install-app erpnext --set-default frontend;      

# ... removed for brevity