fix release cairohttp ghcr

.github/workflows/release_cairohtto.yml

@@ -1,5 +1,13 @@
 name: Build and publish a Docker image to ghcr.io
 on:
+  push:
+    branches:
+      - "fix/cairo_ghcr"
+  pull_request:
+    branches:
+      - "main" 
+    paths:
+      - ".github/workflows/release_cairohttp.yaml"
 
   # publish on releases, e.g. v2.1.13 (image tagged as "2.1.13" - "v" prefix is removed)
   release:
@@ -13,10 +21,9 @@ jobs:
 
     steps:
       - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
-        working-directory: ./cairo-proving-server
       - name: Build and publish a Docker image for cairohttp
-        working-directory: ./cairo-proving-server
         uses: macbre/push-to-ghcr@master
         with:
           image_name: cairohttp  # it will be lowercased internally
           github_token: ${{ secrets.GITHUB_TOKEN }}
+          context: ./cairo-proving-server