add GitHubActions

Author: terasakisatoshi

.github/workflows/result.yml

@@ -0,0 +1,23 @@
+name: CreateResult
+on:
+  push:
+    branches:
+      - main
+jobs:
+  creategif:
+    name: build-and-test
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Build Docker Image
+        run: make
+      - name: creategif
+        run: docker-compose run --rm julia julia demo.jl
+      - name: upload result to release page
+        uses: ncipollo/release-action@v1
+        with:
+          allowUpdates: true
+          omitBodyDuringUpdate: true
+          tag: result/latest
+          artifacts: result.gif
+          token: ${{ secrets.GITHUB_TOKEN }}