Docker action: Do not set latest for dev

.github/workflows/docker-publish.yml

@@ -37,7 +37,7 @@ jobs:
       # Install the cosign tool except on PR
       # https://github.com/sigstore/cosign-installer
       - name: Install cosign
-        if: github.event_name != 'pull_request'
+        if: ${{ github.event_name != 'pull_request' && github.ref_name != 'dev' }}
         uses: sigstore/cosign-installer@6e04d228eb30da1757ee4e1dd75a0ec73a653e06 #v3.1.1
         with:
           cosign-release: 'v2.1.1'
@@ -75,7 +75,7 @@ jobs:
           context: .
           platforms: linux/amd64,linux/arm64,linux/arm/v7
           push: ${{ github.event_name != 'pull_request' }}
-          tags: ${{ steps.meta.outputs.tags }}
+          tags: ${{ github.ref_name == 'ghcr.io/florian-h05/webrtc-sip-gw:dev' && 'dev' || steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
           cache-from: type=gha
           cache-to: type=gha,mode=max
@@ -86,7 +86,7 @@ jobs:
       # transparency data even for private images, pass --force to cosign below.
       # https://github.com/sigstore/cosign
       - name: Sign the published Docker image
-        if: ${{ github.event_name != 'pull_request' }}
+        if: ${{ github.event_name != 'pull_request' && github.ref_name != 'dev' }}
         env:
           # https://docs.github.com/en/actions/security-guides/security-hardening-for-github-actions#using-an-intermediate-environment-variable
           TAGS: ${{ steps.meta.outputs.tags }}