Update Docker Hub Description

.travis.yml

@@ -3,6 +3,7 @@ sudo: required
 language: bash
 services: 
   - docker
+
 addons:
   apt:
     packages:
@@ -14,6 +15,11 @@ jobs:
       script:
         - git ls-files --exclude='*Dockerfile' --ignored | xargs --max-lines=1 -I{} sh -c 'docker run --rm -i -v ${PWD}/.hadolint.yaml:/.hadolint.yaml hadolint/hadolint < "$1"' -- {}
         - bash -c 'shopt -s globstar; shellcheck **/*.sh'
+
+    - stage: Update Docker HUB description
+      if: branch = master
+      script: docker run -v $PWD:/workspace -e DOCKERHUB_USERNAME=$DOCKER_USERNAME -e DOCKERHUB_PASSWORD=$DOCKER_PASSWORD -e DOCKERHUB_REPOSITORY='factoriotools/factorio' -e README_FILEPATH='/workspace/README.md' peterevans/dockerhub-description:2.1.0
+
     - &build
       stage: build
       env: VERSION_SHORT=0.17 EXTRA_TAG=latest STABLE=0.17.74