Make Docker Compose the default way to run the server

adb only needs plain outbound TCP to the TV, so it runs fine in a
container with normal bridge networking (no host networking or
privileged mode). Bundles adb into the image via Dockerfile, adds
docker-compose.yml with a persisted data/ volume, and documents two
ways to fold this into another docker-compose-based repo (vendored
build context vs. a published image).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01RSVyYcrjrbmrMKT85G4fyn

docker-compose.yml

@@ -0,0 +1,11 @@
+services:
+  tv-adb-remote:
+    build: .
+    image: tv-adb-remote
+    ports:
+      - "8787:8787"
+    volumes:
+      - ./data:/app/data
+    environment:
+      - PORT=8787
+    restart: unless-stopped