feat(aws): add aws image variant with default cred helper set to ecr

.github/workflows/container.yml

@@ -58,3 +58,17 @@ jobs:
             cookielab/container-image-tools:${{ github.ref_name }}
             public.ecr.aws/cookielab/container-image-tools:${{ github.ref_name }}
             ghcr.io/${{ github.repository_owner }}/container-image-tools:${{ github.ref_name }}
+
+      - name: Build and push - AWS
+        uses: docker/build-push-action@v4
+        with:
+          context: .
+          file: ./Dockerfile.aws
+          build-args: |
+            VERSION=${{ github.ref_name }}
+          platforms: linux/amd64,linux/arm64
+          push: true
+          tags: |
+            cookielab/container-image-tools:${{ github.ref_name }}-aws
+            public.ecr.aws/cookielab/container-image-tools:${{ github.ref_name }}-aws
+            ghcr.io/${{ github.repository_owner }}/container-image-tools:${{ github.ref_name }}-aws

Dockerfile.aws

@@ -0,0 +1,4 @@
+ARG VERSION
+FROM cookielab/container-image-tools:${VERSION}
+
+COPY config.aws.json /container-image-tools/.docker/config.json

config.aws.json

@@ -0,0 +1,9 @@
+{
+  "credsStore": "ecr-login",
+  "credHelpers": {
+    "ghcr.io": "env",
+    "public.ecr.aws": "ecr-login",
+    "registry.gitlab.com": "env",
+    "registry.cookielab.io": "env"
+  }
+}