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refactor: Simplify Dockerfile by removing builder stage for iperf3 installation (#15)

pull/16/head v0.1.7
Malar Kannan 2025-06-21 02:00:24 +05:30 committed by GitHub
parent 1eeb4b20df
commit 0a3249f30b
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1 changed files with 11 additions and 23 deletions
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34
exporter/Dockerfile
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@ -5,25 +5,13 @@ FROM python:3.9-slim as builder
ARG TARGETARCH
WORKDIR /app
# Install iperf3 and build dependencies
RUN apt-get update && \
apt-get install -y --no-install-recommends gcc iperf3 libiperf-dev && \
# Minimal dependencies for builder stage if any Python packages had C extensions.
# Assuming requirements.txt does not need gcc or other build tools for now.
# If pip install fails later, add necessary build tools (e.g., gcc, python3-dev) here.
RUN apt-get update &&
# apt-get install -y --no-install-recommends gcc python3-dev # Example if needed
rm -rf /var/lib/apt/lists/*
# Determine the correct libiperf source directory based on TARGETARCH
# and copy libiperf.so.0 to a canonical temporary location /tmp/lib/ within the builder stage.
RUN echo "Builder stage TARGETARCH: ${TARGETARCH}" && \
LIBIPERF_SRC_DIR_SEGMENT="" && \
if [ "${TARGETARCH}" = "amd64" ]; then \
LIBIPERF_SRC_DIR_SEGMENT="x86_64-linux-gnu"; \
elif [ "${TARGETARCH}" = "arm64" ]; then \
LIBIPERF_SRC_DIR_SEGMENT="aarch64-linux-gnu"; \
else \
echo "Unsupported TARGETARCH in builder: ${TARGETARCH}" && exit 1; \
fi && \
mkdir -p /tmp/lib && \
cp "/usr/lib/${LIBIPERF_SRC_DIR_SEGMENT}/libiperf.so.0" /tmp/lib/libiperf.so.0
# Install Python dependencies
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt
@ -33,11 +21,11 @@ FROM python:3.9-slim
WORKDIR /app
# Copy iperf3 binary from the builder stage
COPY --from=builder /usr/bin/iperf3 /usr/bin/iperf3
# Copy the prepared libiperf.so.0 from the builder's canonical temporary location
# into a standard library path in the final image.
COPY --from=builder /tmp/lib/libiperf.so.0 /usr/lib/libiperf.so.0
# Install iperf3 and its runtime dependency libsctp1 directly in the final stage.
# This simplifies the Dockerfile by removing the need to copy iperf3 components from the builder.
RUN apt-get update &&
apt-get install -y --no-install-recommends iperf3 libsctp1 &&
rm -rf /var/lib/apt/lists/*
# Copy installed Python packages from the builder stage
COPY --from=builder /usr/local/lib/python3.9/site-packages /usr/local/lib/python3.9/site-packages
@ -49,4 +37,4 @@ COPY exporter.py .
EXPOSE 9876
# Set the entrypoint
CMD ["python", "exporter.py"]
CMD ["python", "exporter.py"]