Change build workflow to take care of creating entire release

.github/workflows/build.yml

@@ -1,30 +0,0 @@
-name: Build
-
-on: [push, pull_request]
-
-jobs:
-  build:
-    runs-on: ubuntu-18.04
-    env:
-      GF_VERSION: 3.10-1
-      DEST: out/
-
-    steps:
-    - uses: actions/checkout@v2
-
-    - name: Install GF
-      run: |
-        curl -s https://www.grammaticalframework.org/download/gf_${GF_VERSION}_amd64.deb -o gf.deb
-        sudo dpkg -i gf.deb
-
-    - name: Build RGL
-      run: |
-        mkdir -p ${DEST}
-        bash Setup.sh --dest=${DEST} --gf=gf --verbose
-
-    - name: Upload artifact
-      uses: actions/upload-artifact@v2
-      with:
-        name: gf-rgl-${{ github.sha }}
-        path: ${{ env.DEST }}
-        if-no-files-found: error

.github/workflows/release.yml

@@ -0,0 +1,61 @@
+name: Create RGL release
+
+on:
+  workflow_dispatch:
+    inputs:
+      tag:
+        description: Release tag (should be YYYYMMDD format)
+
+jobs:
+  build:
+    runs-on: ubuntu-18.04
+    env:
+      GF_VERSION: 3.10-1
+      DEST: gf-rgl-${{ github.event.inputs.tag  }}
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v2
+
+    - name: Install GF
+      run: |
+        curl -s https://www.grammaticalframework.org/download/gf_${GF_VERSION}_amd64.deb -o gf.deb
+        sudo dpkg -i gf.deb
+
+    - name: Build RGL
+      run: |
+        mkdir -p ${DEST}
+        bash Setup.sh --dest=${DEST} --gf=gf --verbose
+
+    - name: Create archive
+      run: |
+        zip asset.zip -r ${{ env.DEST }}
+
+    # - name: Upload artifact
+    #   uses: actions/upload-artifact@v2
+    #   with:
+    #     name: gf-rgl-${{ github.sha }}
+    #     path: ${{ env.DEST }}
+    #     if-no-files-found: error
+
+    - name: Create release
+      id: create_release
+      uses: actions/create-release@v1
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      with:
+        tag_name: ${{ github.event.inputs.tag  }}
+        release_name: Release ${{ github.event.inputs.tag }}
+        draft: false
+        prerelease: false
+
+    - name: Upload release asset
+      id: upload-release-asset
+      uses: actions/upload-release-asset@v1
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      with:
+        upload_url: ${{ steps.create_release.outputs.upload_url }}
+        asset_path: asset.zip
+        asset_name: gf-rgl-${{ github.event.inputs.tag }}.zip
+        asset_content_type: application/zip

RELEASE.md

@@ -0,0 +1,10 @@
+# RGL releases
+
+The RGL does not use semantic versioning.
+Releases are instead made periodically, as snapshots of the current state of the library.
+Releases are Git tagged `YYYYMMDD`, and for each release a binary package (as `.gfo` files) is made available as a GitHub release.
+
+## Creating a new release
+
+1. Run the "Create release" workflow through the GitHub actions interface
+   (instructions [here](https://docs.github.com/en/free-pro-team@latest/actions/managing-workflow-runs/manually-running-a-workflow)).