Add use_buildx flag

Signed-off-by: Tyler Auerbeck <tylerauerbeck@users.noreply.github.com>

.github/workflows/ci.yaml

@@ -2,7 +2,7 @@ name: ci
 on:
   push:
     branches:
-      - '*'
+      - 'main'
   pull_request:
     branches:
       - '*'

.goreleaser.yml

@@ -35,6 +35,7 @@ snapshot:
   name_template: "{{ .Tag }}-next"
 dockers:
   - skip_push: false
+    use_buildx: true
     dockerfile: Dockerfile
     image_templates:
       - quay.io/helmpack/chart-testing:{{ .Tag }}-amd64
@@ -54,6 +55,8 @@ dockers:
       - etc/chart_schema.yaml
       - etc/lintconf.yaml
   - skip_push: false
+    goarch: arm64
+    use_buildx: true
     dockerfile: Dockerfile
     image_templates:
       - quay.io/helmpack/chart-testing:{{ .Tag }}-arm64