diff --git a/Dockerfile b/Dockerfile
index 32d83b4..7986cbe 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,3 +1,9 @@
 FROM docker:24.0.7-dind-alpine3.18
 
 RUN apk update && apk --no-cache add bash curl git
+
+RUN mv $(which sh) /bin/sh.sh; mv $(which bash /bin/bash.sh)
+
+COPY ./entrypoint.sh /bin/sh
+COPY ./entrypoint.sh /bin/bash
+RUN chmod +x /bin/sh /bin/bash
diff --git a/entrypoint.sh b/entrypoint.sh
new file mode 100644
index 0000000..8fe29ec
--- /dev/null
+++ b/entrypoint.sh
@@ -0,0 +1,10 @@
+#! /bin/sh.sh
+
+set -e
+
+if [ -n "$GITHUB_SERVER_URL" ] && [ -n "$GITHUB_REPOSITORY" ]; then
+   git clone "$GITHUB_SERVER_URL/$GITHUB_REPOSITORY" ./git.d
+   cd ./git.d
+fi
+
+exec "$0.sh" "$@"