Add complete playout service, chat backend, frontend with HLS player and live chat, Docker integration with health checks, updated CHANGELOG and architecture docs

backend/playout/Dockerfile

@@ -1,3 +1,15 @@
+FROM golang:1.23-alpine AS builder
+
+WORKDIR /app
+COPY src/ ./src/
+COPY go.mod go.sum ./
+
+# Initialize Go module if not present
+RUN go mod init playout || true
+RUN go mod tidy
+
+RUN CGO_ENABLED=0 GOOS=linux go build -o /playlist-manager ./src/playlist.go
+
 FROM alpine:3.20
 
 # Install FFmpeg, curl for health checks, and basic tools
@@ -8,18 +20,17 @@ RUN apk add --no-cache \
 
 WORKDIR /app
 
-# Copy playout scripts and configuration
-COPY src/ /app/src/
-COPY config/ /app/config/
+COPY --from=builder /playlist-manager /app/playlist-manager
+COPY start-playout.sh /app/
 COPY *.sh /app/
 
-RUN chmod +x /app/*.sh
+RUN chmod +x /app/*.sh /app/playlist-manager
 
-# Create directories for playlist and HLS output
-RUN mkdir -p /app/playlist /app/hls
+# Create directories for playlist, media, and HLS output
+RUN mkdir -p /app/playlist /app/media /app/hls
 
 # Expose HLS directory (will be served by nginx)
 VOLUME ["/app/hls"]
 
-# Default command runs the playout loop
+# Default command runs the playout loop (which calls the Go validator)
 CMD ["./start-playout.sh"]