wip: add github actions workflow and versioning

.github/workflows/build-publish-dockerfile.yml

@@ -0,0 +1,36 @@
+name: Build and publish docker image 
+
+# Controls when the workflow will run
+on:
+  workflow_dispatch: # Allows you to run this workflow manually from the Actions tab
+  repository_dispatch:
+    types: [build-publish]
+
+jobs:
+  build-publish:
+    runs-on: ubuntu-latest # The type of runner that the job will run on
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0 # avoid shallow clone so nbgv can do its work.
+
+      - name: Set version
+        uses: dotnet/[email protected]
+        id: nbgv
+        with:
+          setAllVars: false
+
+      - name: Build and Publish as versioned
+        uses: VaultVulp/[email protected]
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }} # Provide GITHUB_TOKEN to login into the GitHub Packages
+          image-name: ositemindex.api # Provide only Docker image name, tag will be automatically set to latest
+          image-tag: ${{ steps.nbgv.outputs.SimpleVersion }}
+
+      - name: Build and Publish as latest
+        uses: VaultVulp/[email protected]
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }} # Provide GITHUB_TOKEN to login into the GitHub Packages
+          image-name: ositemindex.api # Provide only Docker image name, tag will be automatically set to latest

version.json

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+{
+  "$schema": "https://raw.githubusercontent.com/dotnet/Nerdbank.GitVersioning/master/src/NerdBank.GitVersioning/version.schema.json",
+  "version": "1.0",
+  "publicReleaseRefSpec": [
+    "^refs/heads/master$",
+    "^refs/heads/v\\d+(?:\\.\\d+)?$"
+  ],
+  "cloudBuild": {
+    "buildNumber": {
+      "enabled": true
+    }
+  }
+}