diff --git a/docker/manifest.tmpl b/docker/manifest.tmpl
index 14fedff..ba5a877 100644
--- a/docker/manifest.tmpl
+++ b/docker/manifest.tmpl
@@ -6,29 +6,24 @@ tags:
 {{/each}}
 {{/if}}
 manifests:
-  -
-    image: plugins/webhook:{{#if build.tag}}{{trimPrefix "v" build.tag}}-{{/if}}linux-amd64
+  - image: plugins/webhook:{{#if build.tag}}{{trimPrefix "v" build.tag}}-{{/if}}linux-amd64
     platform:
       architecture: amd64
       os: linux
-  -
-    image: plugins/webhook:{{#if build.tag}}{{trimPrefix "v" build.tag}}-{{/if}}linux-arm64
+  - image: plugins/webhook:{{#if build.tag}}{{trimPrefix "v" build.tag}}-{{/if}}linux-arm64
     platform:
       architecture: arm64
       os: linux
-  -
-    image: plugins/webhook:{{#if build.tag}}{{trimPrefix "v" build.tag}}-{{/if}}linux-arm
+  - image: plugins/webhook:{{#if build.tag}}{{trimPrefix "v" build.tag}}-{{/if}}linux-arm
     platform:
       architecture: arm
       os: linux
-  -
-    image: plugins/webhook:{{#if build.tag}}{{trimPrefix "v" build.tag}}-{{/if}}windows-1809-amd64
+  - image: plugins/webhook:{{#if build.tag}}{{trimPrefix "v" build.tag}}-{{/if}}windows-1809-amd64
     platform:
       architecture: amd64
       os: windows
       version: 1809
-  -
-    image: plugins/webhook:{{#if build.tag}}{{trimPrefix "v" build.tag}}-{{/if}}windows-1903-amd64
+  - image: plugins/webhook:{{#if build.tag}}{{trimPrefix "v" build.tag}}-{{/if}}windows-1903-amd64
     platform:
       architecture: amd64
       os: windows