ci: build examples through bake

Signed-off-by: Brian Goff <cpuguy83@gmail.com>

Author: cpuguy83

.github/workflows/ci.yml

@@ -417,9 +417,7 @@ jobs:
           docker buildx bake test
       - name: Build go-md2man example in docs
         run: |
-          version=$(cat docs/examples/go-md2man.yml | yq .version)
-          docker build -t go-md2man:$version -f docs/examples/go-md2man.yml --target=azlinux3/rpm --output=_output .
-          docker build -t go-md2man:$version -f docs/examples/go-md2man.yml --target=azlinux3 .
+          docker buildx bake examples
       - name: dump logs
         if: failure()
         id: dump-logs

docs/examples/go-md2man.yml

@@ -1,4 +1,3 @@
-# syntax=local/dalec/frontend:latest
 # syntax=ghcr.io/project-dalec/dalec/frontend:latest
 
 name: go-md2man