diff --git a/Dockerfile b/Dockerfile
index 1068b2d..2b5af66 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -42,6 +42,12 @@ if ! command -v __git_ps1 > /dev/null; then
 fi
 EOF
 
+RUN cat <<'EOF' >> /home/ubuntu/.bashrc
+if ! command -v __git_ps1 > /dev/null; then
+    source /etc/profile.d/git-prompt-helper
+fi
+EOF
+
 COPY entrypoint.sh /entrypoint.sh
 RUN chmod +x /entrypoint.sh
 ENTRYPOINT ["/entrypoint.sh"]