add github workflow to automatically build a docker image

.github/workflows/docker-image.yml

@@ -0,0 +1,18 @@
+name: Docker Image CI
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Build the Docker image
+      run: docker build . --file Dockerfile --tag flame:$(date +%s)

.github/workflows/merge-upstream-master.yml

@@ -0,0 +1,42 @@
+# .github/workflows/example.yml
+
+name: Fork Sync With Upstream
+
+on:
+  schedule:
+     # actually, ~5 minutes is the highest
+     # effective frequency you will get
+    - cron:  '0 3 * * 1'
+  workflow_dispatch: #run manually
+      
+jobs:
+  merge:
+    runs-on: ubuntu-latest
+    steps:
+      # Step 1: run a standard checkout action, provided by github
+    - name: Checkout main
+      uses: actions/checkout@v2
+      with:
+        ref: master
+        # submodules: 'recursive'     ### may be needed in your situation
+
+    # Step 2: run this sync action - specify the upstream repo, upstream branch to sync with, and target sync branch
+    - name: Pull (Fast-Forward) upstream changes
+      id: sync
+      uses: aormsby/Fork-Sync-With-Upstream-action@v2.3
+      with:
+        upstream_repository: pawelmalak/flame
+        upstream_branch: master
+        target_branch: master
+        git_pull_rebase_config: true
+        # git_pull_args: --ff-only                    # optional arg use, defaults to simple 'pull'
+        # github_token: ${{ secrets.GITHUB_TOKEN }}   # optional, for accessing repos that require authentication
+
+    # Step 3: Display a message if 'sync' step had new commits (simple test)
+    - name: Check for new commits
+      if: steps.sync.outputs.has_new_commits
+      run: echo "There were new commits."
+
+    # Step 4: Print a helpful timestamp for your records (not required, just nice)
+    - name: Timestamp
+      run: date