reference docker images at docker.io

docker/netdisco-web/Dockerfile

@@ -1,8 +1,11 @@
 # vim: ft=Dockerfile
-FROM netdisco-base:latest
+ARG TAG=master
+FROM docker.io/netdisco:${TAG}-base
+
+EXPOSE 5000
+VOLUME ["/home/netdisco/environments", "/home/netdisco/nd-site-local"]
 
 USER netdisco:netdisco
 WORKDIR $NETDISCO_HOME
-VOLUME ["/home/netdisco/environments", "/home/netdisco/nd-site-local"]
 ENTRYPOINT ["/home/netdisco/bin/netdisco-web"]
 CMD ["foreground"]

docker/netdisco-web/hooks/build

@@ -0,0 +1,2 @@
+#!/bin/bash
+docker build --build-arg TAG=$SOURCE_BRANCH -t $IMAGE_NAME .