CI: add snap package publish job

.github/workflows/CI.yml

@@ -2,6 +2,9 @@ name: CI
 
 on: [push, pull_request, workflow_dispatch]
 
+env:
+  SNAPCRAFT_STORE_CREDENTIALS: ${{secrets.SNAPCRAFT_LOGIN}}
+
 jobs:
   build:
     runs-on: ubuntu-22.04
@@ -126,3 +129,30 @@ jobs:
         dotnet fantomas .
         git diff --exit-code
 
+  publish_snap:
+    needs:
+    - run_snap
+    - integration_tests
+    - conventions
+
+    runs-on: ubuntu-22.04
+    steps:
+    - uses: actions/download-artifact@v3
+      name: Download artifact
+      with:
+        name: snap
+
+    - name: Unzip & upload snap
+      run: |
+        zip -r snap.zip .
+
+    - name: Install snapcraft
+      run: |
+        sudo snap install --classic snapcraft
+        snapcraft --version
+
+    - name: Upload to SnapStore
+      run: |
+        # no need to 'snapcraft login' first, see https://forum.snapcraft.io/t/snapcraft-authentication-options/30473/21
+        snapcraft upload *.snap --release=beta
+

snap/snapcraft.yaml

@@ -1,6 +1,6 @@
 name: packwallet # you probably want to 'snapcraft register <name>'
 base: core22 # the base snap is the execution environment for this snap
-version: '0.1' # just for humans, typically '1.2+git' or '1.3.2'
+version: '0.1.1' # just for humans, typically '1.2+git' or '1.3.2'
 summary: HelloWorld F# app with snap # 79 char long summary
 description: |
   Parse CoinDesk API to show current BTC price.