Add build.yml to correct directory

.forgejo/workflows/build.yml

@@ -0,0 +1,21 @@
+name: 'Build Custom docker:dind image'
+author: 'Neshura'
+
+on: [push]
+jobs:
+    build-container:
+        runs-on: docker
+        steps:
+            -
+                name: Set up QEMU
+                uses: docker/setup-qemu-action@v3
+            -
+                name: Set up Docker Buildx
+                uses: docker/setup-buildx-action@v3
+            -
+                name: Push to Package Registry
+                uses: docker/build-push-action@v5
+                with:
+                    context: .
+                    push: true
+                    tags: https://forgejo.neshweb.net/Neshura/docker-dind-bash:latest