don't swallow failures

image/services/sshd/sshd.sh

@@ -7,8 +7,8 @@ SSHD_BUILD_PATH=/bd_build/services/sshd
 
 ## Install the SSH server.
 $minimal_apt_get_install openssh-server
-mkdir /var/run/sshd
-mkdir /etc/service/sshd
+mkdir -p /var/run/sshd
+mkdir -p /etc/service/sshd
 touch /etc/service/sshd/down
 cp $SSHD_BUILD_PATH/sshd.runit /etc/service/sshd/run
 cp $SSHD_BUILD_PATH/sshd_config /etc/ssh/sshd_config

image/system_services.sh

@@ -22,10 +22,16 @@ ln -s /etc/container_environment.sh /etc/profile.d/
 $minimal_apt_get_install runit
 
 ## Install a syslog daemon and logrotate.
-[ "$DISABLE_SYSLOG" -eq 0 ] && /bd_build/services/syslog-ng/syslog-ng.sh || true
+if [ "$DISABLE_SYSLOG" -eq 0 ]; then
+    /bd_build/services/syslog-ng/syslog-ng.sh
+fi
 
 ## Install the SSH server.
-[ "$DISABLE_SSH" -eq 0 ] && /bd_build/services/sshd/sshd.sh || true
+if [ "$DISABLE_SSH" -eq 0 ]; then
+    /bd_build/services/sshd/sshd.sh
+fi
 
 ## Install cron daemon.
-[ "$DISABLE_CRON" -eq 0 ] && /bd_build/services/cron/cron.sh || true
+if [ "$DISABLE_CRON" -eq 0 ]; then
+    /bd_build/services/cron/cron.sh
+fi