Adding docker-publish script to set of deployment scripts

scripts/docker-publish.sh

@@ -0,0 +1,12 @@
+#!/bin/bash
+
+if [ "$TRAVIS_BRANCH" == "master" ]; then
+  TAG=latest
+  if [ ! -z "$TRAVIS_TAG" ]; then
+    TAG=$TRAVIS_TAG
+  fi
+
+  docker login -u="$DOCKER_USERNAME" -p="$DOCKER_PASSWORD";
+  docker push clems4ever/authelia:$TAG;
+fi
+