Initial commit — DRB client (edge node) stack

Includes edge-node (FastAPI/MQTT/Discord voice), op25-container (SDR decoder),
and icecast (audio streaming).

op25-container/run_multi-rx_service.sh

@@ -0,0 +1,22 @@
+#!/bin/bash
+
+# Configuration file path
+CONFIG_FILE="/configs/active.cfg.json"
+
+# --- Start the main OP25 receiver (multi_rx.py) in the background ---
+# The '&' sends the process to the background.
+echo "Starting multi_rx.py..."
+./multi_rx.py -v 1 -c $CONFIG_FILE &
+MULTI_RX_PID=$! # Store the PID of the background process
+
+# --- Start the liquid-dsp plot utility (op25.liq) in the background ---
+echo "Starting op25.liq..."
+liquidsoap /configs/op25.liq &
+LIQ_PID=$! # Store the PID of the op25.liq process
+
+# Wait for both background jobs to finish.
+# Since multi_rx.py is the core service, this script will effectively wait 
+# until multi_rx.py is externally stopped (via the API).
+# The trap command ensures that SIGTERM is passed to the background jobs.
+trap "kill $MULTI_RX_PID $LIQ_PID" SIGTERM SIGINT
+wait $MULTI_RX_PID