added docker-compose for linux

serial_bridge/Dockerfile

@@ -0,0 +1,24 @@
+FROM python:3.11-slim
+
+RUN apt-get update && apt-get install -y --no-install-recommends socat && rm -rf /var/lib/apt/lists/*
+
+WORKDIR /app
+
+# Install serial_bridge dependencies (server-only, no pystray/PyInstaller)
+COPY serial_bridge/requirements.server.txt serial_bridge/requirements.server.txt
+RUN pip install --no-cache-dir -r serial_bridge/requirements.server.txt
+
+# Install test_writer dependencies
+COPY test_comport_writer/requirements.txt test_comport_writer/requirements.txt
+RUN pip install --no-cache-dir -r test_comport_writer/requirements.txt
+
+# Copy application code
+COPY serial_bridge/ serial_bridge/
+COPY test_comport_writer/ test_comport_writer/
+
+COPY serial_bridge/entrypoint.sh /entrypoint.sh
+RUN chmod +x /entrypoint.sh
+
+EXPOSE 5000
+
+ENTRYPOINT ["/entrypoint.sh"]

serial_bridge/app.py

@@ -214,7 +214,8 @@ def start_app():
     
     # Start Flask app
     debug = os.getenv('DEBUG', 'False').lower() == 'true'
-    app.run(host='127.0.0.1', port=5000, debug=debug, use_reloader=False)
+    host = os.getenv('HOST', '127.0.0.1')
+    app.run(host=host, port=5000, debug=debug, use_reloader=False)
 
 
 def stop_app():

serial_bridge/entrypoint.sh

@@ -0,0 +1,22 @@
+#!/bin/bash
+set -e
+
+echo "[socat] Creating virtual serial port pair..."
+socat PTY,raw,echo=0,link=/tmp/vcom_read PTY,raw,echo=0,link=/tmp/vcom_write &
+
+# Wait until both PTY symlinks exist
+for i in $(seq 1 20); do
+    if [ -e /tmp/vcom_read ] && [ -e /tmp/vcom_write ]; then
+        echo "[socat] Virtual ports ready: /tmp/vcom_read <-> /tmp/vcom_write"
+        break
+    fi
+    sleep 0.5
+done
+
+echo "[test_writer] Starting test COM port writer..."
+cd /app/test_comport_writer
+COM_PORT=/tmp/vcom_write python test_writer.py &
+
+echo "[serial_bridge] Starting Flask SSE server..."
+cd /app/serial_bridge
+exec python app.py

serial_bridge/requirements.server.txt

@@ -0,0 +1,4 @@
+pyserial==3.5
+python-dotenv==1.0.0
+flask==3.1.0
+flask-cors==5.0.0