add RESTRICT_GUEST_ACCESS to block unregistered users from all applications

compose.yml

@@ -16,6 +16,7 @@ services:
       - "CPAD_HTTP2_DISABLE=true"
       - "CPAD_TRUST_PROXY=1"
       - "CPAD_CONF=/cryptpad/config/config.js"
+      - "RESTRICT_GUEST_ACCESS=${RESTRICT_GUEST_ACCESS:-false}"
     volumes:
       - cryptpad_blob:/cryptpad/blob
       - cryptpad_block:/cryptpad/block
@@ -26,6 +27,8 @@ services:
     configs:
       - source: config_js
         target: /cryptpad/config/config.js
+      - source: application_config_js
+        target: /cryptpad/customize/application_config.js
 
     deploy:
       restart_policy:
@@ -86,3 +89,7 @@ configs:
     name: ${STACK_NAME}_nginx_conf_${NGINX_CONF_VERSION}
     file: nginx.conf.tmpl
     template_driver: golang
+  application_config_js:
+    name: ${STACK_NAME}_application_config_js_${APPLICATION_CONFIG_VERSION}
+    file: application_config.js.tmpl
+    template_driver: golang