Added compose configurations for Syncthing.

.gitignore

@@ -6,6 +6,7 @@
 !ttrss/
 !funkwhale/
 !mediawiki/
+!syncthing/
 !**/docker-compose.yml
 !**/Dockerfile
 !.gitignore

syncthing/docker-compose.yml

@@ -0,0 +1,16 @@
+version: "3"
+
+services:
+    syncthing:
+        image: syncthing/syncthing
+        container_name: syncthing
+        restart: always
+        environment:
+            - PUID=1000
+            - PGID=1000
+        ports:
+            - "8384:8384"
+            - "22000:22000"
+            - "21027:21027/udp"
+        volumes:
+            - .:/var/syncthing