feat: add icecast service to compose

docker-compose.yml

@@ -1,5 +1,21 @@
 name: 'denpa-radio'
 
 services:
-  # icecast added in Task 3
+  icecast:
+    image: libretime/icecast:2.4.4
+    restart: unless-stopped
+    ports:
+      - '172.17.0.1:12000:8000'
+    volumes:
+      - type: bind
+        source: ./config/icecast.xml
+        target: /etc/icecast2/icecast.xml
+        read_only: true
+    healthcheck:
+      test: ['CMD-SHELL', 'wget -q -O- http://localhost:8000/status-json.xsl | grep -q icestats']
+      interval: 30s
+      timeout: 5s
+      retries: 3
+      start_period: 10s
+
   # liquidsoap added in Task 6