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s3-ffmpeg-stream/Dockerfile

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+# Dockerfile
+FROM alpine:3.20
+
+LABEL maintainer="will"
+LABEL version="1.0"
+
+# ffmpeg + bash + coreutils
+RUN apk add --no-cache ffmpeg bash coreutils procps
+
+WORKDIR /app
+
+# Where optional URL files can be mounted
+VOLUME ["/app"]
+
+COPY entrypoint.sh /usr/local/bin/entrypoint.sh
+RUN chmod +x /usr/local/bin/entrypoint.sh
+
+# Defaults (override at runtime)
+ENV URLS="" \ 
+    URLS_FILE="/app/urls.txt" \
+    LOOP="1" \
+    PROTOCOL="udp" \
+    TARGET="udp://239.0.0.1:1234?ttl=16" \
+    # m4a is typically AAC-in-MP4; copy when target supports AAC:
+    CODEC="aac" \
+    COPY_CODEC_WHEN_POSSIBLE="1" \
+    BITRATE="160k" \
+    SAMPLE_RATE="48000" \
+    FFMPEG_EXTRA_ARGS=""
+
+ENTRYPOINT ["/usr/local/bin/entrypoint.sh"]
+
+HEALTHCHECK --interval=30s --timeout=5s --start-period=15s --retries=3 \
+    CMD test -f /tmp/ffmpeg.pid && ps -p "$(cat /tmp/ffmpeg.pid)" > /dev/null