init: SNEK on Kubernetes

- Dockerfile: Ubuntu 20.04 + all SNEK dependencies (libgtk2-perl, libffi6, etc.)
- entrypoint.sh: flash firmware via foxctl, start main_sigfox
- deploy/snek.yaml: K8s manifest (namespace, PVC, deployment, LoadBalancer)
- README: full documentation covering hardware, software, decoding, callbacks

build/Dockerfile

@@ -0,0 +1,45 @@
+FROM ubuntu:20.04
+
+LABEL org.opencontainers.image.title="Sigfox Network Emulator (SNEK)"
+LABEL org.opencontainers.image.description="SNEK 2.3.4 pre-installed with all dependencies for Sigfox SDR dongle"
+
+ARG DEBIAN_FRONTEND=noninteractive
+ARG SNEK_URL=https://support.sigfox.com/files/5e6202fa7d734d7f7f84a08e
+
+# System dependencies (GTK stack + SNEK runtime deps)
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends \
+        curl \
+        wget \
+        ca-certificates \
+        usbutils \
+        libgtk2-perl \
+        zenity \
+        python \
+        libdbus-glib-1-2 \
+    && rm -rf /var/lib/apt/lists/*
+
+# libffi6 is not in Ubuntu 20.04 by default (SNEK is built against Ubuntu 18.04 ABI)
+RUN cd /tmp && \
+    wget -q http://archive.ubuntu.com/ubuntu/pool/main/libf/libffi/libffi6_3.2.1-8_amd64.deb && \
+    dpkg -i libffi6_3.2.1-8_amd64.deb && \
+    rm libffi6_3.2.1-8_amd64.deb
+
+# Download and install SNEK
+RUN curl -Ls "${SNEK_URL}" -o /tmp/snek.deb && \
+    dpkg -i /tmp/snek.deb || apt-get install -f -y && \
+    rm /tmp/snek.deb && \
+    rm -rf /var/lib/apt/lists/*
+
+# Entrypoint: flash firmware then start SNEK server
+COPY entrypoint.sh /entrypoint.sh
+RUN chmod +x /entrypoint.sh
+
+ENV LD_LIBRARY_PATH=/opt/snek
+ENV GI_TYPELIB_PATH=/opt/snek
+
+WORKDIR /opt/snek
+
+EXPOSE 8085
+
+ENTRYPOINT ["/entrypoint.sh"]

build/entrypoint.sh

@@ -0,0 +1,20 @@
+#!/bin/bash
+set -e
+
+echo "==> Sigfox Network Emulator container starting"
+echo "==> Detecting Sigfox dongle..."
+
+if lsusb | grep -iE "2cc1"; then
+    echo "==> Dongle detected"
+else
+    echo "!!! WARNING: no Sigfox dongle detected on /dev/bus/usb"
+    echo "!!! Make sure the container has: privileged: true AND /dev/bus/usb mounted"
+fi
+
+echo "==> Flashing firmware (foxctl)..."
+cd /opt/snek
+./foxctl || echo "foxctl RC=$? (may be normal if firmware already loaded)"
+sleep 2
+
+echo "==> Starting SNEK main_sigfox on port 8085..."
+exec ./main_sigfox