Get rid of obsolete version.

Author: jum

caddy/docker-compose.yml

@@ -1,4 +1,3 @@
-version: "3"
 services:
   caddy:
     container_name: caddy

gitea/docker-compose.yml

@@ -1,4 +1,3 @@
-version: "3"
 name: gitea
 services:
   gitea:

mariadb/docker-compose.yml

@@ -1,4 +1,3 @@
-version: "3"
 name: mariadb
 services:
   mariadb:

nextcloud/docker-compose.yml

@@ -1,4 +1,3 @@
-version: "3"
 name: nextcloud
 services:
   nextcloud:

postgres/docker-compose.yml

@@ -1,4 +1,3 @@
-version: "3"
 name: postgres
 services:
   postgres:

redis/docker-compose.yml

@@ -1,4 +1,3 @@
-version: "3"
 name: redis
 services:
   redis:

watchtower/docker-compose.yml

@@ -1,4 +1,4 @@
-version: "3"
+name: watchtower
 services:
   watchtower:
     container_name: watchtower

whoami/docker-compose.yml

@@ -1,4 +1,4 @@
-version: "3"
+name: whoami
 services:
   whoami:
     container_name: whoami