Move to self-hosted

.github/workflows/build_and_push.yaml

@@ -6,15 +6,12 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-latest
+    runs-on: self-hosted
 
     steps:
     - name: Set up Docker Buildx
       uses: docker/setup-buildx-action@v2
 
-    - name: Set up QEMU
-      uses: docker/setup-qemu-action@v2
-
     - name: Login to DockerHub
       uses: docker/login-action@v1
       with:
@@ -24,6 +21,5 @@ jobs:
     - name: Build and push Docker image
       uses: docker/build-push-action@v4
       with:
-        platforms: linux/amd64
         push: true
         tags: shaunly/real_char:latest