diff --git a/docker/Dockerfile b/docker/Dockerfile
index 076c484d..2cf89424 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -109,7 +109,8 @@ RUN groupadd -r huskies \
     && chown -R huskies:huskies /usr/local/cargo /usr/local/rustup \
     && chown -R huskies:huskies /app \
     && mkdir -p /workspace/target /app/target \
-    && chown huskies:huskies /workspace/target /app/target
+    && chown huskies:huskies /workspace/target /app/target \
+    && git config --global init.defaultBranch master
 
 # ── Entrypoint ───────────────────────────────────────────────────────
 # Validates required env vars (GIT_USER_NAME, GIT_USER_EMAIL) and