explicitely add bash

Dockerfile

@@ -2,7 +2,7 @@ FROM debian:stable-20241223-slim AS install
 RUN set -eux; \
     export DEBIAN_FRONTEND=noninteractive; \
     apt update; \
-    for P in ca-certificates curl gnupg python3 libgl1 ocl-icd-libopencl1 libquadmath0 boinctui vim-tiny; do \
+    for P in ca-certificates curl gnupg python3 libgl1 ocl-icd-libopencl1 libquadmath0 bash bash-completion boinctui vim-tiny; do \
       apt -y install --no-install-recommends "${P}" || echo "ERROR: Could not install ${P}"; \
     done; \
     update-alternatives --install /usr/bin/vim vim /usr/bin/vim.tiny 0 || echo WARNING; \

start

@@ -108,8 +108,8 @@ if [ "`whoami`" = "boinc" ]; then
 		# This appears on the Docker Desktop Exec tab
 		clear
 		boinctui
-		bash -l && exit || echo -n "\n[$0] `whoami`@`hostname`"
-		echo
+		bash -l
+		exit
 	fi
 fi