diff --git a/run-tests.sh b/run-tests.sh
index a25f781..cbc5f0b 100755
--- a/run-tests.sh
+++ b/run-tests.sh
@@ -4,12 +4,21 @@ set -euo pipefail
 SHELLCHECK_SEVERITY=${SHELLCHECK_SEVERITY:-warning}
 
 run_test() {
+  if [ -f /.dockerenv ]; then
+    eval "$1"
+    return
+  fi
+
   podman run --rm -it -v "$(pwd)":/github/workspace:z --env "GITHUB_WORKSPACE=/github/workspace" koji.test "$1"
 }
 
-pushd test
-podman build -t koji.test -f Dockerfile .
-popd
+if [ ! -f /.dockerenv ]; then
+  pushd test
+  podman build -t koji.test -f Dockerfile .
+  popd
+else
+  echo "Container detected, direct mode."
+fi
 
 SCRIPTS="$(git ls-files --exclude='*.sh' --ignored | xargs echo)"