Add -y option to cosign sign commands (#61)

Signed-off-by: masteryyh <yyh991013@163.com>

Author: masteryyh

.github/workflows/build-image.yaml

@@ -86,7 +86,7 @@ jobs:
       - name: Sign Ubuntu experimental image
         if: ${{ ! startsWith(github.ref, 'refs/tags/v') }}
         run: |
-          cosign sign masteryyh/micro-ddns@${{ steps.build-ubuntu-exp.outputs.digest }}
+          cosign sign -y masteryyh/micro-ddns@${{ steps.build-ubuntu-exp.outputs.digest }}
         env:
           COSIGN_EXPERIMENTAL: "true"
 
@@ -104,7 +104,7 @@ jobs:
       - name: Sign Alpine experimental image
         if: ${{ ! startsWith(github.ref, 'refs/tags/v') }}
         run: |
-          cosign sign masteryyh/micro-ddns@${{ steps.build-alpine-exp.outputs.digest }}
+          cosign sign -y masteryyh/micro-ddns@${{ steps.build-alpine-exp.outputs.digest }}
         env:
           COSIGN_EXPERIMENTAL: "true"
 
@@ -122,7 +122,7 @@ jobs:
       - name: Sign slim experimental image
         if: ${{ ! startsWith(github.ref, 'refs/tags/v') }}
         run: |
-          cosign sign masteryyh/micro-ddns@${{ steps.build-slim-exp.outputs.digest }}
+          cosign sign -y masteryyh/micro-ddns@${{ steps.build-slim-exp.outputs.digest }}
         env:
           COSIGN_EXPERIMENTAL: "true"
 
@@ -139,7 +139,7 @@ jobs:
       - name: Sign Ubuntu image
         if: startsWith(github.ref, 'refs/tags/v')
         run: |
-          cosign sign masteryyh/micro-ddns@${{ steps.build-ubuntu.outputs.digest }}
+          cosign sign -y masteryyh/micro-ddns@${{ steps.build-ubuntu.outputs.digest }}
         env:
           COSIGN_EXPERIMENTAL: "true"
 
@@ -157,7 +157,7 @@ jobs:
       - name: Sign Alpine image
         if: startsWith(github.ref, 'refs/tags/v')
         run: |
-          cosign sign masteryyh/micro-ddns@${{ steps.build-alpine.outputs.digest }}
+          cosign sign -y masteryyh/micro-ddns@${{ steps.build-alpine.outputs.digest }}
         env:
           COSIGN_EXPERIMENTAL: "true"
 
@@ -175,7 +175,7 @@ jobs:
       - name: Sign slim image
         if: startsWith(github.ref, 'refs/tags/v')
         run: |
-          cosign sign masteryyh/micro-ddns@${{ steps.build-slim.outputs.digest }}
+          cosign sign -y masteryyh/micro-ddns@${{ steps.build-slim.outputs.digest }}
         env:
           COSIGN_EXPERIMENTAL: "true"