feat(mcp): implement media channel management and scheduling features

k-tv-backend/Dockerfile

@@ -11,7 +11,11 @@ FROM debian:bookworm-slim
 WORKDIR /app
 
 # Install OpenSSL, CA certs, and ffmpeg (provides ffprobe for local-files duration scanning)
-RUN apt-get update && apt-get install -y libssl3 ca-certificates ffmpeg && rm -rf /var/lib/apt/lists/*
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    libssl3 \
+    ca-certificates \
+    ffmpeg \
+    && rm -rf /var/lib/apt/lists/*
 
 COPY --from=builder /app/target/release/api .