Fix typo

container-templates/dockerfile/.devcontainer/Dockerfile

@@ -32,7 +32,7 @@ RUN apt-get update \
     # Verify git, common tools / libs installed, add/modify non-root user, optionally install zsh
     && wget -q -O /tmp/common-setup.sh $COMMON_SCRIPT_SOURCE \
     && if [ "$COMMON_SCRIPT_SHA" != "dev-mode" ]; then echo "$COMMON_SCRIPT_SHA /tmp/common-setup.sh" | sha256sum -c - ; fi \
-    && /bin/ash /tmp/common-setup.sh "$INSTALL_ZSH" "$USERNAME" "$USER_UID" "$USER_GID" \
+    && /bin/bash /tmp/common-setup.sh "$INSTALL_ZSH" "$USERNAME" "$USER_UID" "$USER_GID" \
     && rm /tmp/common-setup.sh \
     #
     # *********************************************************************