refactor: build only one frappe/erpnext image (#1032)

* ci: skip frappe builds

* refactor: build only one frappe/erpnext image

* fix: lint nginx entrypoint script

* docs: update and organize docs

* docs: fix lint errors

* fix(custom): pass base64 encoded apps json

* ci: update dependabot

* docs: update contributing

* docs: remove info about multi image setup

* fix: initiate empty common_site_config.json

default config has host keys set to localhost
causes connection errors

* docs: add details for pwd volumes

* fix: symlink assets instead of copy

* fix: nginx private files

* ci: skip docker compose v2 install for ubuntu-latest

* fix: organize layers

* feat: allow remove git remote for custom image

* docs: allow remove git remote for custom image

* fix: remove duplicate --apps_path

.github/dependabot.yml

@@ -11,22 +11,12 @@ updates:
       interval: daily
 
   - package-ecosystem: docker
-    directory: images/nginx
+    directory: images/production
     schedule:
       interval: daily
 
   - package-ecosystem: docker
-    directory: images/worker
-    schedule:
-      interval: daily
-
-  - package-ecosystem: docker
-    directory: images/socketio
-    schedule:
-      interval: daily
-
-  - package-ecosystem: npm
-    directory: images/socketio
+    directory: images/custom
     schedule:
       interval: daily