diff --git a/common.config b/common.config
index e69de29..a14bed9 100644
--- a/common.config
+++ b/common.config
@@ -0,0 +1,2 @@
+DEBIAN_CODENAME=bullseye
+QUICTLS_SOURCE=https://codeload.github.com/quictls/openssl/tar.gz/openssl-3.0.3+quic