Replace hard-coded hostname with input

.github/workflows/stage.yml

@@ -1,6 +1,13 @@
 name: Deploy (Staging)
 
-on: workflow_dispatch
+on: 
+  workflow_dispatch:
+    inputs:
+      hostname:
+        description: Hostname
+        type: string
+        required: true
+        default: antville.org
 
 jobs:
   stage:
@@ -8,7 +15,7 @@ jobs:
 
     environment:
       name: stage
-      url: ${{ vars.stage_url }}
+      url: ${{ inputs.hostname }}
 
     steps:
       - uses: actions/checkout@v4
@@ -16,9 +23,9 @@ jobs:
       - name: Build with Gradle
         run: ./gradlew installDist
 
-      - name: Publish to staging server
+      - name: Copy build files to server
         run: |
-          rsync ./build/install/helma/ staging-server:./ \
+          rsync ./build/install/helma/ ${{ inputs.hostname }}:./ \
             --verbose --archive --delete --compress \
             --filter '+ /bin' \
             --filter '+ /extras' \
@@ -29,4 +36,4 @@ jobs:
             --filter '- /*'
 
       - name: Restart Helma
-        run: ssh staging-server restart
+        run: ssh ${{ inputs.hostname }} restart