docker-compose: Add init to UI (#3248)

* docker-compose: Add init to UI

Prevents waiting 10 seconds to shutdown

* docker-compose: Update to version 3.7

docker/docker-compose.yml

@@ -1,4 +1,4 @@
-version: "3.3"
+version: "3.7"
 
 x-logging: &default-logging
   driver: "json-file"
@@ -80,6 +80,7 @@ services:
       - lemmy
     restart: always
     logging: *default-logging
+    init: true
 
   pictrs:
     image: asonix/pictrs:0.4.0-beta.19

docker/federation/docker-compose.yml

@@ -1,6 +1,7 @@
-version: "3.3"
+version: "3.7"
 
 x-ui-default: &ui-default
+  init: true
   image: dessalines/lemmy-ui:0.17.3
   # assuming lemmy-ui is cloned besides lemmy directory
   # build: