Added GitHub Actions

Signed-off-by: Valentin Popov <info@valentineus.link>

.github/workflows/docker-publish.yml

@@ -0,0 +1,31 @@
+name: Docker
+
+on:
+  push:
+    branches:
+      - master
+
+env:
+  IMAGE_NAME: "valentineus/meteor"
+
+jobs:
+  push:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        include:
+          version: [
+            "1.10",
+            "1.6"
+          ]
+
+    steps:
+      - uses: docker/build-push-action@v1
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+          tag: ${{ matrix.include.version }}
+          repository: valentineus/meteor
+          dockerfile: "default/release/Dockerfile"
+          buildargs: "RELEASE=${{ matrix.include.version }}"