add default config and expose relevant ports

.dockerignore

@@ -1 +1,2 @@
 *
+!snapserver.conf

Dockerfile

@@ -8,3 +8,8 @@ RUN apt-get update && \
   apt-get autoremove -y && \
   apt-get clean && \
   rm -rf /var/lib/apt/lists/*
+ADD snapserver.conf /etc/snapserver.conf
+EXPOSE 1780
+EXPOSE 1705
+EXPOSE 1704
+CMD snapserver -c /etc/snapserver.conf

snapserver.conf

@@ -0,0 +1,9 @@
+[server]
+user=root
+
+[stream]
+codec=pcm
+
+[logging]
+sink=stdout
+