switch to upstream docker -- hopefully fixes ipv6 source address issues

docker-compose.yml

@@ -28,6 +28,8 @@ services:
     links:
       - forgejo
       - mail
+    networks:
+      - net_with_ipv6
     labels:
       - "com.centurylinklabs.watchtower.enable=true"
   forgejo:
@@ -48,6 +50,8 @@ services:
       - "127.0.0.1:2222:22"
     links:
       - mail:mail.${BASE_DOMAIN_NAME}
+    networks:
+      - net_with_ipv6
     labels:
       - "com.centurylinklabs.watchtower.enable=true"
   mail:
@@ -68,5 +72,12 @@ services:
       - /etc/letsencrypt:/etc/letsencrypt:ro
       - /etc/ssl/certs:/etc/ssl/certs:ro
       - /usr/local/share/ca-certificates:/usr/local/share/ca-certificates:ro
+    networks:
+      - net_with_ipv6
     # labels:
     #   - "com.centurylinklabs.watchtower.enable=true"
+
+networks:
+  net_with_ipv6:
+    attachable: true
+    enable_ipv6: true