Have the daemon listening on 0.0.0.0

As we default to 127.0.0.1 in the code

Author: Julien Vallée

Dockerfile

@@ -24,5 +24,5 @@ COPY --from=builder /go/bin/alertmanager-discord /go/bin/alertmanager-discord
 
 EXPOSE 9094
 USER appuser
-ENTRYPOINT ["/go/bin/alertmanager-discord"]
+ENTRYPOINT ["/go/bin/alertmanager-discord", "-listen.address", "0.0.0.0:9094"]