fix(ci): use dockerhub variable instead (#509)

Author: tobiasehlert

.github/workflows/build.yml

@@ -71,7 +71,7 @@ jobs:
       - name: Login to DockerHub
         uses: docker/login-action@184bdaa0721073962dff0199f1fb9940f07167d1 #v3.5.0
         with:
-          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          username: ${{ vars.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
 
       - name: Login to GitHub Container Registry
@@ -168,7 +168,7 @@ jobs:
       - name: Login to DockerHub
         uses: docker/login-action@184bdaa0721073962dff0199f1fb9940f07167d1 #v3.5.0
         with:
-          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          username: ${{ vars.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
 
       - name: Login to GitHub Container Registry

.github/workflows/dockerhub.yml

@@ -18,6 +18,6 @@ jobs:
       - name: Docker Hub Description
         uses: peter-evans/dockerhub-description@432a30c9e07499fd01da9f8a49f0faf9e0ca5b77 #v4.0.2
         with:
-          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          username: ${{ vars.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
           short-description: ${{ github.event.repository.description }}