Enable project checks

These checks had to be disabled to get the CRI merge completed.
Now these should be added back.
After CRI merge, more time for lint is needed on mac.

Signed-off-by: Derek McGowan <derek@mcg.dev>

.github/workflows/ci.yml

@@ -38,6 +38,7 @@ jobs:
         with:
           version: v1.29
           working-directory: src/github.com/containerd/containerd
+          args: --timeout=5m
 
   #
   # Project checks
@@ -104,9 +105,7 @@ jobs:
           else
           DCO_RANGE=$(curl ${GITHUB_COMMIT_URL} | jq -r '.[0].parents[0].sha + "..HEAD"')
           fi
-          # Add back after CRI merge complete and remove last call
-          # ../project/script/validate/dco
-          echo "skipping for CRI merge since older commits may not pass this check"
+          ../project/script/validate/dco
 
       - name: Headers
         run: ../project/script/validate/fileheader ../project/