diff --git a/docker/Dockerfile.template b/docker/Dockerfile.template
index 9756a634..6cc03853 100644
--- a/docker/Dockerfile.template
+++ b/docker/Dockerfile.template
@@ -27,7 +27,7 @@ ENV SHELL=/bin/bash \
 
 RUN apt update --yes && \
     apt install --yes --no-install-recommends --no-install-suggests \
-      nano curl bc kmod \
+      ca-certificates nano curl bc kmod git \
       build-essential make ncurses-dev libssl-dev autogen automake pkg-config libtool xsltproc gperf && \
     apt-get clean && \
     rm -rf /var/lib/apt/lists/*
diff --git a/docker/files/opt/do.sh b/docker/files/opt/do.sh
index 7b046092..dc4ff5d1 100755
--- a/docker/files/opt/do.sh
+++ b/docker/files/opt/do.sh
@@ -71,7 +71,7 @@ if [ $# -lt 1 ]; then
   exit 1
 fi
 case $1 in
-  bash) bash -l ;;
+  bash) shift; bash -l $@ ;;
   compile-module) compile-module $2 ;;
   compile-lkm) compile-lkm $2 ;;
   compile-drivers) compile-drivers ;;