added ci, artifact cleanup, and pushing releases to dockerhub and npm

.github/dockerhub.yml

@@ -0,0 +1,35 @@
+name: dockerhub
+
+on:
+  release:
+    types: [published]
+
+env:
+  project: 'release-node'
+
+jobs:
+
+  dockerhub:
+    runs-on: ubuntu-latest
+    steps:
+
+    - name: Checkout
+      uses: actions/checkout@v2
+
+    - name: Build
+      run: |
+	docker build -t ${{ env.project }} .
+
+    - name: Login
+      env:
+	DOCKERHUB_USERNAME: ${{ secrets.DOCKERHUB_USERNAME }}
+	DOCKERHUB_TOKEN: ${{ secrets.DOCKERHUB_TOKEN }}
+      run: echo ${{ secrets.DOCKERHUB_TOKEN }} | docker login -u ${{ secrets.DOCKERHUB_USERNAME }} --password-stdin
+
+    - name: Tag
+      run: |
+	docker tag ${{ env.project }} ${{ secrets.DOCKERHUB_USERNAME }}/${{ env.project }}:${GITHUB_REF/refs\/tags\/v/}
+	docker tag ${{ env.project }} ${{ secrets.DOCKERHUB_USERNAME }}/${{ env.project }}:latest
+
+    - name: Push
+      run: docker push ${{ secrets.DOCKERHUB_USERNAME }}/${{ env.project }}