Fix Docker Compose for Mac dev mode

- Replace all ghcr.io images (blocked without auth) with local Dockerfiles:
  snapserver/snapclient from debian:bookworm-slim,
  mopidy from debian:bookworm-slim + Python/GStreamer,
  librespot disabled in dev (v0.8.0 has vergen dep bug)
- Fix duplicate 'image' and 'version' keys in compose files
- Dev mode: zones + librespot use alpine dummy containers
- Dashboard dev: use upstream node:20-alpine directly (no custom build)
- Port changed to 8090 (8080 taken by Supabase)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

docker-compose.yml

@@ -1,5 +1,3 @@
-version: "3.9"
-
 # Production docker-compose for boat deployment.
 # For development use: docker compose -f docker-compose.yml -f docker-compose.dev.yml up
 
@@ -42,23 +40,19 @@ services:
   # ─── Audio Sources ─────────────────────────────────────────────────────────
 
   librespot:
-    image: ghcr.io/librespot-org/librespot:latest
+    build: ./docker/librespot
     restart: unless-stopped
     # On Linux (boat): use host network for mDNS/Spotify discovery
     # network_mode: host
     ports:
       - "57621:57621/udp"   # Spotify zeroconf discovery
       - "57621:57621/tcp"
-    environment:
-      - SPOTIFY_NAME=${SPOTIFY_NAME:-Bordanlage}
-      - SPOTIFY_BITRATE=${SPOTIFY_BITRATE:-320}
     command: >
       --name "${SPOTIFY_NAME:-Bordanlage}"
       --bitrate ${SPOTIFY_BITRATE:-320}
       --backend pipe
       --device /tmp/audio/spotify.pcm
       --zeroconf-port 57621
-      --cache-size-limit ${SPOTIFY_CACHE_SIZE:-1024}
     volumes:
       - pipes:/tmp/audio
     networks:
@@ -114,7 +108,7 @@ services:
   # ─── Multiroom Audio ───────────────────────────────────────────────────────
 
   snapserver:
-    image: ghcr.io/badaix/snapcast:latest
+    build: ./docker/snapserver
     restart: unless-stopped
     ports:
       - "1704:1704"   # Snapcast protocol
@@ -131,41 +125,41 @@ services:
       - bordanlage
 
   zone-salon:
-    image: ghcr.io/badaix/snapcast:latest
+    build: ./docker/snapclient
     restart: unless-stopped
     depends_on:
       - snapserver
     # On boat: add --soundcard hw:0,0 and device /dev/snd
     # devices:
     #   - /dev/snd:/dev/snd
-    command: snapclient --host snapserver --hostID zone-salon --player null
+    command: ["snapclient", "--host", "snapserver", "--hostID", "zone-salon", "--player", "null"]
     networks:
       - bordanlage
 
   zone-cockpit:
-    image: ghcr.io/badaix/snapcast:latest
+    build: ./docker/snapclient
     restart: unless-stopped
     depends_on:
       - snapserver
-    command: snapclient --host snapserver --hostID zone-cockpit --player null
+    command: ["snapclient", "--host", "snapserver", "--hostID", "zone-cockpit", "--player", "null"]
     networks:
       - bordanlage
 
   zone-bug:
-    image: ghcr.io/badaix/snapcast:latest
+    build: ./docker/snapclient
     restart: unless-stopped
     depends_on:
       - snapserver
-    command: snapclient --host snapserver --hostID zone-bug --player null
+    command: ["snapclient", "--host", "snapserver", "--hostID", "zone-bug", "--player", "null"]
     networks:
       - bordanlage
 
   zone-heck:
-    image: ghcr.io/badaix/snapcast:latest
+    build: ./docker/snapclient
     restart: unless-stopped
     depends_on:
       - snapserver
-    command: snapclient --host snapserver --hostID zone-heck --player null
+    command: ["snapclient", "--host", "snapserver", "--hostID", "zone-heck", "--player", "null"]
     networks:
       - bordanlage