Added Wifi Connect

Dockerfile

@@ -1,31 +1,60 @@
-FROM python:3.12-alpine3.22 as builder
-
-RUN apk add --no-cache \
-        freetype-dev \
-        libjpeg-turbo-dev \
-        gcc \
-        musl-dev \
-        linux-headers 
-
-WORKDIR /usr/src/app
+FROM python:3.13-slim-bookworm as builder
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    build-essential \
+    curl
+
+WORKDIR /opt/build
+WORKDIR /opt/build/ui
+
+# Download WiFi Connect
+# Use latest version. If specific version is required, it should be provided as vX.Y.Z, e.g v4.11.37
+ARG VERSION="latest"
+
+RUN \
+    export BASE_URL="https://github.com/balena-os/wifi-connect/releases" &&\    
+    DETECTED_ARCH=$(uname -m) &&\
+    case $DETECTED_ARCH in \
+        "aarch64") \
+            BINARY_ARCH_NAME="aarch64-unknown-linux-gnu" ;; \
+        "x86_64") \
+            BINARY_ARCH_NAME="x86_64-unknown-linux-gnu" ;;\
+        "armv7l") \
+            BINARY_ARCH_NAME="armv7-unknown-linux-gnueabihf" ;;\
+        *) \
+            echo >&2 "error: unsupported architecture ($DETECTED_ARCH)"; exit 1 ;; \ 
+    esac;\
+    if [ ${VERSION} = "latest" ]; then \
+        export URL_PARTIAL="latest/download" ; \
+    else \
+        export URL_PARTIAL="download/${VERSION}" ; \
+    fi; \
+    curl -Ls "$BASE_URL/$URL_PARTIAL/wifi-connect-$BINARY_ARCH_NAME.tar.gz" \
+    | tar -xvz -C  /opt/build && \
+    curl -Ls "$BASE_URL/$URL_PARTIAL/wifi-connect-ui.tar.gz" \
+    | tar -xvz -C  /opt/build/ui
 
 # Install the required python packages, and save the compiled result to an output folder
 # This requires gcc/etc which is why we do it in the build image and save the result for the run image
 COPY requirements.txt .
 RUN pip install --no-cache-dir -r requirements.txt
 
-FROM python:3.12-alpine3.22
+# Build final stage
+FROM python:3.13-slim-bookworm
 
-RUN apk add --no-cache \
-        freetype-dev \
-        libjpeg-turbo-dev \
-        tzdata
+RUN apt-get update && apt-get install -y --no-install-recommends \ 
+    wireless-tools \
+    dnsmasq
 
 # Copy in the compiled packages
-COPY --from=builder /usr/local/lib/python3.12/site-packages /usr/local/lib/python3.12/site-packages
+COPY --from=builder /usr/local/lib/python3.13/site-packages /usr/local/lib/python3.13/site-packages
+COPY --from=builder /opt/build /usr/src/app
 
 WORKDIR /usr/src/app
 COPY src ./src
 COPY VERSION .
 
-CMD ["python3", "src/main.py"]
+# For WiFi Connect
+ENV DBUS_SYSTEM_BUS_ADDRESS unix:path=/host/run/dbus/system_bus_socket
+
+CMD ["sh", "src/start.sh"]

docker-compose.yml

@@ -0,0 +1,13 @@
+version: "2"
+
+services:
+  train-departure-display:
+    network_mode: "host"
+    privileged: true
+    build: .
+    ports:
+      - "80:80"
+    volumes:
+      - /run/dbus:/host/run/dbus:ro
+    labels:
+      io.balena.features.dbus: "1"

src/start.sh

@@ -0,0 +1,33 @@
+#!/usr/bin/env bash
+sleep 5  # give Supervisor time to attach log stream
+set -x
+
+# Optional step - it takes couple of seconds (or longer) to establish a WiFi connection
+# sometimes. In this case, following checks will fail and wifi-connect
+# will be launched even if the device will be able to connect to a WiFi network.
+# If this is your case, you can wait for a while and then check for the connection.
+# sleep 15
+
+# Choose a condition for running WiFi Connect according to your use case:
+
+# 1. Is there a default gateway?
+# ip route | grep default
+
+# 2. Is there Internet connectivity?
+# nmcli -t g | grep full
+
+# 3. Is there Internet connectivity via a google ping?
+# wget --spider http://google.com 2>&1
+
+# 4. Is there an active WiFi connection?
+iwgetid -r
+
+if [ $? -eq 0 ]; then
+    printf 'Skipping WiFi Connect\n'
+else
+    printf 'Starting WiFi Connect\n'
+    ./wifi-connect
+    printf 'Finished WiFi Connect\n'
+fi
+
+python -u src/main.py