fixed Docker image build

.gitea/workflows/build.yaml

@@ -1,7 +1,8 @@
 name: CI
 on:
   push:
-    branches: [ master ]
+    tags:
+      - '*'
 jobs:
   build_pip_package:
     name: "Build Pip package"
@@ -57,6 +58,7 @@ jobs:
       - name: Build and push bugis images
         uses: docker/build-push-action@v6
         with:
+          context: .
           platforms: |
             linux/amd64
             linux/arm64
@@ -64,6 +66,6 @@ jobs:
           pull: true
           tags: |
             "gitea.woggioni.net/woggioni/bugis:latest"
-            "gitea.woggioni.net/woggioni/bugis:${env:VERSION}"
+            "gitea.woggioni.net/woggioni/bugis:${{ env.VERSION }}"
           cache-from: type=registry,ref=gitea.woggioni.net/woggioni/bugis:buildx
           cache-to: type=registry,mode=max,compression=zstd,image-manifest=true,oci-mediatypes=true,ref=gitea.woggioni.net/woggioni/bugis:buildx