Add requirement for nosql tag.

.github/workflows/license.yml

@@ -47,10 +47,4 @@ jobs:
         run: |
           go run github.com/google/go-licenses check \
             --allowed_licenses=Apache-2.0,Apache-3,BSD-2-Clause,BSD-3-Clause,BSD-4-Clause,CC0-1.0,ISC,MIT \
-            # Ignore our own repo because `go-licenses` ignores the root license for submodules and we have
-            # a submodule.
-            --ignore github.com/Jigsaw-Code/outline-ss-server \
-            # Caddy dependends on this MPL-2.0 licensed dependency, but doesn't actually compile it into
-            # the binary. See https://github.com/caddyserver/caddy/pull/6655.
-            --ignore github.com/go-sql-driver/mysql \
             ./...

cmd/caddy/main.go

@@ -12,6 +12,9 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+//go:build nosql
+// +build nosql
+
 package main
 
 import (