Fix docker entrypoint (#174)

docker-entrypoint.sh

@@ -0,0 +1,9 @@
+#!/bin/bash
+
+sed -i "s|username|${username}|g" ${exposeConfigPath} && sed -i "s|password|${password}|g" ${exposeConfigPath}
+
+if [[ $# -eq 0 ]]; then
+    exec /src/expose serve ${domain} --port ${port} --validateAuthTokens
+else
+    exec /src/expose "$@"
+fi