Add gitea service

Needed to modify the nginx configuration to allow streaming of ssh.
Using docker compose for this service, will probably migrate all others soon.

gitea/compose.yaml

@@ -0,0 +1,32 @@
+services:
+  gitea:
+    image: gitea/gitea:latest
+    container_name: gitea
+    # restart: unless-stopped
+
+    environment:
+      # Gitea-supported vars for internal ownership/permissions
+      - USER_UID=1027
+      - USER_GID=65536
+      - TZ=Europe/London
+
+    volumes:
+      # Local: app.ini, database (sqlite by default), queues (LevelDB), sessions, etc.
+      - gitea-data:/data
+
+      # NAS: only repositories (best practice)
+      - /mnt/gitea-repos:/data/git/repositories
+
+      # Optional: put LFS on NAS too
+      # - /mnt/gitea-lfs:/data/git/lfs
+
+      - /etc/timezone:/etc/timezone:ro
+      - /etc/localtime:/etc/localtime:ro
+
+    ports:
+      - "3000:3000" # Web
+      - "2222:22" # SSH (container 22 -> host 2222)
+
+volumes:
+  gitea-data:
+    driver: local