Update workflow

.github/workflows/dockerhub-description.yml

@@ -0,0 +1,24 @@
+name: Update Docker Hub Description
+on:
+  push:
+    branches:
+      - master
+    paths:
+      - README.md
+      - .github/workflows/dockerhub-description.yml
+jobs:
+  dockerHubDescription:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v1
+      - name: Copy README.md to TEST.md
+        run: |
+          mkdir -p some/path
+          mv README.md some/path/TEST.md
+      - name: Docker Hub Description
+        uses: ./
+        env:
+          DOCKERHUB_USERNAME: ${{ secrets.DOCKERHUB_USERNAME }}
+          DOCKERHUB_PASSWORD: ${{ secrets.DOCKERHUB_PASSWORD }}
+          DOCKERHUB_REPOSITORY: peterevans/dockerhub-description
+          README_FILEPATH: ./some/path/TEST.md