Containerise

.github/workflows/container.yml

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+name: Container Images
+
+on:
+  push:
+    branches:
+      - 'master'
+  pull_request:
+  workflow_dispatch:
+  schedule:
+    - cron: '45 10 * * 2'
+
+jobs:
+  main:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Repository
+        uses: actions/checkout@v2
+
+      - name: Calculate Container Metadata
+        id: meta
+        uses: docker/metadata-action@v3
+        with:
+          images: ghcr.io/${{ github.repository }}
+          flavor: |
+            latest=true
+
+      - name: Setup QEMU
+        uses: docker/setup-qemu-action@v1
+
+      - name: Setup Buildx
+        uses: docker/setup-buildx-action@v1
+
+      - name: Cache Layers
+        uses: actions/cache@v2
+        with:
+          path: /tmp/buildx-cache
+          key: buildx-cache-${{ github.sha }}
+          restore-keys: |
+            buildx-cache-
+
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v1
+        if: github.event_name != 'pull_request'
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build and Push Images
+        uses: docker/build-push-action@v2
+        with:
+          context: .
+          platforms: linux/amd64, linux/386, linux/arm64, linux/arm/v6, linux/arm/v7
+          cache-from: type=local,src=/tmp/buildx-cache
+          cache-to: type=local,dest=/tmp/buildx-cache-new,mode=max
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+
+      - name: Move Cache
+        run: |
+          rm -rf /tmp/buildx-cache
+          mv /tmp/buildx-cache-new /tmp/buildx-cache

Dockerfile

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+# -------------------
+# The build container
+# -------------------
+FROM debian:buster-slim AS build
+
+# Install build dependencies.
+RUN apt-get update && \
+  apt-get install -y --no-install-recommends \
+    build-essential \
+    cmake \
+    git \
+    libusb-1.0-0-dev \
+    pkg-config \
+    python3 \
+    python3-dev \
+    python3-pip \
+    python3-setuptools \
+    python3-wheel && \
+  rm -rf /var/lib/apt/lists/*
+
+# Compile and install rtl-sdr.
+RUN git clone https://github.com/steve-m/librtlsdr.git /root/librtlsdr && \
+  mkdir -p /root/librtlsdr/build && \
+  cd /root/librtlsdr/build && \
+  cmake -DCMAKE_INSTALL_PREFIX=/root/target/usr/local -Wno-dev ../ && \
+  make && \
+  make install && \
+  rm -rf /root/librtlsdr
+
+# Compile and install ssdv.
+RUN git clone https://github.com/fsphil/ssdv.git /root/ssdv && \
+  cd /root/ssdv && \
+  make && \
+  DESTDIR=/root/target make install && \
+  rm -rf /root/ssdv
+
+# Install Python packages.
+RUN --mount=type=cache,target=/root/.cache/pip pip3 install \
+  --user --no-warn-script-location --ignore-installed --no-binary numpy \
+    crcmod \
+    flask \
+    flask-socketio \
+    requests \
+    numpy
+
+# Copy in radiosonde_auto_rx.
+COPY . /root/wenet
+
+# Build the binaries.
+WORKDIR /root/wenet/src
+RUN make
+
+# -------------------------
+# The application container
+# -------------------------
+FROM debian:buster-slim
+
+EXPOSE 5003/tcp
+
+# Install application dependencies.
+RUN apt-get update && \
+  apt-get install -y --no-install-recommends \
+  bc \
+  libusb-1.0-0 \
+  python3 \
+  tini && \
+  rm -rf /var/lib/apt/lists/*
+
+# Copy compiled dependencies from the build container.
+COPY --from=build /root/target /
+RUN ldconfig
+
+# Copy any additional Python packages from the build container.
+COPY --from=build /root/.local /root/.local
+
+# Copy wenet from the build container to /opt.
+COPY --from=build /root/wenet/rx/ /opt/wenet/
+COPY --from=build /root/wenet/LICENSE.txt /opt/wenet/
+
+# Set the working directory.
+WORKDIR /opt/wenet
+
+# Ensure scripts from Python packages are in PATH.
+ENV PATH=/root/.local/bin:$PATH
+
+# Use tini as init.
+ENTRYPOINT ["/usr/bin/tini", "--"]
+
+# Run start_rx_docker.sh.
+CMD ["/opt/wenet/start_rx_docker.sh"]

rx/start_rx_docker.sh

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+#!/bin/bash
+#
+#	Wenet RX-side Initialisation Script - HEADLESS DOCKER VERSION
+#	2019 Mark Jessop <vk5qi@rfhead.net>
+#
+#	This code mostly assumes an RTLSDR will be used for RX.
+#
+#	This version of the startup script is intended to be run as a Docker container
+# on a headless Raspberry Pi 3B+ or newer.
+#	A display of imagery and telemetry can be accessed at http://<pi_ip>:5003/
+#
+
+# Check that a callsign has been set.
+if [ -z "$MYCALL" ]; then
+  echo "ERROR: MYCALL has not been set."
+	exit 1
+fi
+
+# Defaults
+: "${RXFREQ:=441200000}"
+: "${DEVICE:=0}"
+: "${GAIN:=0}"
+: "${BIAS:=0}"
+: "${BAUD_RATE:=115177}"
+: "${OVERSAMPLING:=8}"
+
+# Start up the SSDV Uploader script and push it into the background.
+python3 ssdvuploader.py "$MYCALL" &
+SSDV_UPLOAD_PID=$!
+
+# Start the Web Interface Server
+python3 wenetserver.py &
+WEB_VIEWER_PID=$!
+
+# Calculate the SDR sample rate required.
+SDR_RATE=$(("$BAUD_RATE" * "$OVERSAMPLING"))
+
+# Calculate the SDR centre frequency.
+# The fsk_demod acquisition window is from Rs/2 to Fs/2 - Rs.
+# Given Fs is Rs * Os  (Os = oversampling), we can calculate the required tuning offset with the equation:
+# Offset = Fcenter - Rs*(Os/4 - 0.25)
+RX_SSB_FREQ=$(echo "$RXFREQ - $BAUD_RATE * ($OVERSAMPLING/4 - 0.25)" | bc)
+
+echo "Using SDR Sample Rate: $SDR_RATE Hz"
+echo "Using SDR Centre Frequency: $RX_SSB_FREQ Hz"
+
+if [ "$BIAS" = "1" ]; then
+  echo "Enabling Bias Tee"
+  rtl_biast -d "$DEVICE" -b 1
+fi
+
+# Start up the receive chain.
+echo "Using Complex Samples."
+rtl_sdr -d "$DEVICE" -s "$SDR_RATE" -f "$RX_SSB_FREQ" -g "$GAIN" - | \
+./fsk_demod --cu8 -s --stats=100 2 "$SDR_RATE" "$BAUD_RATE" - - 2> >(python3 fskstatsudp.py --rate 1) | \
+./drs232_ldpc - -  -vv 2> /dev/null | \
+python3 rx_ssdv.py --partialupdate 16 --headless
+
+# Kill off the SSDV Uploader and the GUIs
+kill $SSDV_UPLOAD_PID
+kill $WEB_VIEWER_PID