Nightly workflow using platform workflows

.github/workflows/linux.yml

@@ -12,6 +12,10 @@ on:
         required: false
         default: false
         type: boolean
+      upload:
+        required: false
+        default: false
+        type: boolean
   workflow_dispatch:
     inputs:
       layout:
@@ -27,6 +31,10 @@ on:
         required: false
         default: false
         type: boolean
+      upload:
+        required: false
+        default: false
+        type: boolean
   push:
     branches: ["try-linux", "try-wpt"]
 
@@ -73,6 +81,11 @@ jobs:
         with:
           name: ${{ env.PACKAGE }}
           path: target/release/servo-tech-demo.tar.gz
+      - name: Upload
+        if: ${{ inputs.upload }}
+        run: python3 ./mach upload-nightly ${{ env.PACKAGE }} --secret-from-environment
+        env:
+          S3_UPLOAD_CREDENTIALS: ${{ secrets.S3_UPLOAD_CREDENTIALS }}
       - name: Package binary
         run: tar -czf target.tar.gz target/release/servo resources
       - name: Archive binary