add github ci (#134)

Signed-off-by: Michal Vala <mvala@redhat.com>

.github/workflows/build.yml

@@ -0,0 +1,21 @@
+#
+#  Copyright (c) 2012-2019 Red Hat, Inc.
+#    This program and the accompanying materials are made
+#    available under the terms of the Eclipse Public License 2.0
+#    which is available at https://www.eclipse.org/legal/epl-2.0/
+#
+#  SPDX-License-Identifier: EPL-2.0
+#
+#  Contributors:
+#    Red Hat, Inc. - initial API and implementation
+name: Docker
+on: [pull_request, push]
+jobs:
+
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v1
+    - name: Build the Docker image
+      run: docker build .