feat(server): Dockerfile and compose for the Lidarr stack

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

server/.dockerignore

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+__pycache__/
+*.pyc
+tests/
+docs/
+.git/

server/Dockerfile

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+FROM python:3.12-slim
+
+RUN apt-get update \
+    && apt-get install -y --no-install-recommends ffmpeg \
+    && rm -rf /var/lib/apt/lists/*
+
+WORKDIR /app
+COPY server/requirements.txt /app/server/requirements.txt
+RUN pip install --no-cache-dir -r /app/server/requirements.txt yt-dlp
+
+COPY musicfetch /app/musicfetch
+COPY server /app/server
+
+EXPOSE 6769
+CMD ["sh", "-c", "uvicorn server.app:app --host 0.0.0.0 --port ${MUSICFETCH_PORT:-6769}"]

server/docker-compose.yml

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+services:
+  musicfetch-api:
+    build:
+      context: ..
+      dockerfile: server/Dockerfile
+    container_name: musicfetch-api
+    restart: unless-stopped
+    ports:
+      - "6769:6769"
+    environment:
+      LIDARR_URL: "http://lidarr:8686"
+      LIDARR_API_KEY: "${LIDARR_API_KEY}"
+      MUSICFETCH_API_KEY: "${MUSICFETCH_API_KEY}"
+      MUSICFETCH_ROOT: "/media/music"
+      MUSICFETCH_PORT: "6769"
+    volumes:
+      - /media/music:/media/music
+    networks:
+      - lidarr_net
+
+networks:
+  lidarr_net:
+    external: true
+    # Set to the actual network name of your existing Lidarr stack, e.g.:
+    # name: media_default