feat: add github workflow file for docker push :shipit:

.github/workflows/docker.yml

@@ -0,0 +1,52 @@
+name: Run Docker
+
+# Controls when the workflow will run
+on:
+  push:
+    branches:
+      - 'master'
+      - 'v*.x'
+    tags:
+      - 'v*'
+  workflow_dispatch:
+
+# A workflow run is made up of one or more jobs that can run sequentially or in parallel
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v1
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+
+      - name: Login to Docker Hub
+        uses: docker/login-action@v1
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Docker meta
+        id: meta
+        uses: docker/metadata-action@v3
+        with:
+          images: nodebb/docker
+          tags: |
+            type=semver,pattern={{version}}
+            type=semver,pattern={{major}}.{{minor}}
+            type=raw,value=latest
+
+      - name: Build and push Docker images
+        uses: docker/build-push-action@v2
+        with:
+          context: .
+          file: ./Dockerfile
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+

test/emailer.js

@@ -87,7 +87,7 @@ describe('emailer', () => {
 						assert.equal(output, text);
 						done();
 					});
-				}, 500);
+				}, 2000);
 			});
 		});
 	});