set -e option, so that we fail as early as possible

bootstrap-root.sh

@@ -1,4 +1,6 @@
 #! /bin/bash
+# fail immediately on error
+set -e
 
 bash -c "apt update && apt dist-upgrade && \
 	apt install bash-completion locales man mc elinks git zsh curl neovim byobu htop \

bootstrap-user.sh

@@ -1,4 +1,7 @@
 #! /bin/bash
+# fail immediately on error
+set -e
+
 TMPDIR=$(mktemp -u -p "$HOME" -d dotfiles.XXXXX) && \
 	git clone --separate-git-dir="$HOME/.cfg" https://github.com/schtobia/dotfiles.git "$TMPDIR" && \
 	[ -r "$TMPDIR/.gitmodules" ] && cp -vi "$TMPDIR/.gitmodules" "$HOME"

bootstrap.sh

@@ -1,4 +1,6 @@
 #! /bin/sh
+# fail immediately on error
+set -e
 
 # root part
 curl -RLSsf1 https://github.com/schtobia/bootstrap/raw/master/bootstrap-root.sh | sudo -SEH bash -

docker-install.sh

@@ -1,4 +1,7 @@
 #! /bin/bash
+# fail immediately on error
+set -e
+
 [ "$UID" -ne 0 ] && { echo "You must run this script as root." >&2; exit 1; }
 (DISTRO=$(lsb_release -is | tr '[A-Z]' '[a-z]'); curl -LSsf https://download.docker.com/linux/$DISTRO/gpg | apt-key add - && \
 	add-apt-repository "deb https://download.docker.com/linux/$DISTRO $(lsb_release -cs) stable" && \