diff --git a/.github/workflows/on-push.yml b/.github/workflows/on-push.yml
index b138c8c..d12d75d 100644
--- a/.github/workflows/on-push.yml
+++ b/.github/workflows/on-push.yml
@@ -2,7 +2,10 @@ name: Docker build on push
 env:
         DOCKER_CLI_EXPERIMENTAL: enabled
 
-on: push
+on:
+    push:
+        branches:
+            - master
 
 jobs:
         build:
@@ -48,12 +51,12 @@ jobs:
                               restore-keys: |
                                   ${{ runner.os }}-buildx-
 
-                        - name: Build against latest
+                        - name: Build against master
                           run: |
                                   docker buildx build \
                                   --cache-from "type=local,src=/tmp/.buildx-cache" \
                                   --cache-to "type=local,dest=/tmp/.buildx-cache" \
                                   --platform linux/amd64,linux/arm64,linux/arm/v7,linux/arm/v6 \
-                                  --tag ${{ secrets.DOCKER_HUB_USER }}/$DOCKER_HUB_REPO:$SHORTSHA \
+                                  --tag ${{ secrets.DOCKER_HUB_USER }}/$DOCKER_HUB_REPO:master-$SHORTSHA \
                                   --output "type=registry" .