release: linux build in ubuntu 18.04 fixes #1147

This change also properly fixes the double release creation issue due to
the upload files process not sepcifying the draft flag.

Also added update tag step so the tag gets updated to latest commit and
is easier to kick new builds for pre releases without having to create a
new release.

.github/workflows/release.yml

@@ -1,6 +1,10 @@
 name: Release
 
 on:
+  push:
+    tags:
+      - v[0-9]+.*
+
   workflow_dispatch:
     inputs:
       version:
@@ -11,7 +15,7 @@ on:
 jobs:
   release:
     name: Create Release
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-18.04
     outputs:
       upload_url: ${{ steps.create_release.outputs.upload_url }}
       version: ${{ steps.tag.outputs.version }}
@@ -26,6 +30,12 @@ jobs:
           else
             echo ::set-output name=version::${GITHUB_REF/refs\/tags\//}
           fi
+      - name: Update Tag
+        uses: richardsimko/update-tag@v1
+        with:
+          tag_name: ${{ steps.tag.outputs.version }}
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
       - name: Create Release
         id: create_release
         uses: softprops/action-gh-release@v1
@@ -33,14 +43,13 @@ jobs:
           tag_name: ${{ steps.tag.outputs.version }}
           name: Lite XL ${{ steps.tag.outputs.version }}
           draft: true
-          prerelease: false
           body_path: changelog.md
           generate_release_notes: true
 
   build_linux:
     name: Linux
     needs: release
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-18.04
     env:
       CC: gcc
       CXX: g++
@@ -76,6 +85,7 @@ jobs:
         uses: softprops/action-gh-release@v1
         with:
           tag_name: ${{ needs.release.outputs.version }}
+          draft: true
           files: |
             lite-xl-${{ env.INSTALL_REF }}-linux-x86_64-portable.tar.gz
             lite-xl-${{ env.INSTALL_REF }}-addons-linux-x86_64-portable.tar.gz
@@ -121,6 +131,7 @@ jobs:
         uses: softprops/action-gh-release@v1
         with:
           tag_name: ${{ needs.release.outputs.version }}
+          draft: true
           files: |
             ${{ env.INSTALL_NAME }}.dmg
             ${{ env.INSTALL_NAME_ADDONS }}.dmg
@@ -176,6 +187,7 @@ jobs:
         uses: softprops/action-gh-release@v1
         with:
           tag_name: ${{ needs.release.outputs.version }}
+          draft: true
           files: |
             ${{ env.INSTALL_NAME }}.zip
             ${{ env.INSTALL_NAME_ADDONS }}.zip