Add MPD docker setup

templates/mpd/docker-compose.j2

@@ -0,0 +1,22 @@
+# {{ ansible_managed }}
+
+networks:
+  mpd-net:
+    ipam:
+      config:
+        - subnet: '{{ mpd_subnet }}'
+
+services:
+  mpd:
+    build:
+      context: .
+      dockerfile: Dockerfile
+    volumes:
+      - {{ mpd_config_dir }}:/app/config
+      - {{ mpd_state_dir }}:/app/state
+      - {{ mpd_playlist_dir }}:/app/playlists
+      - {{ mpd_music_dir }}:/app/music
+    restart: always
+    networks:
+      mpd-net:
+        ipv4_address: '{{ mpd_app_ip }}'