Unfortunately, we cannot support docker snap installations, cf. https://askubuntu.com/questions/1374480/docker-compose-installed-with-snap-gives-error-on-yml-file

This reverts commit 292d71b6c2.

lib/functions.sh

@@ -11,22 +11,6 @@ detectCompose() {
 	fi
 }
 
-# https://unix.stackexchange.com/questions/539147
-systemctl-exists() {
-	[ $(systemctl list-unit-files "${1}*" | wc -l) -gt 3 ]
-}
-
-dockerUnitName() {
-	if systemctl-exists docker.service; then
-		echo "docker.service"
-	elif systemctl-exists snap.docker.dockerd.service; then
-		echo "snap.docker.dockerd.service"
-	else
-		log ERROR "Unable to detect docker systemd unit."
-		fail_and_report 1 "Unable to detect docker systemd unit."
-	fi
-}
-
 exitIfNotRoot() {
   if [ "$EUID" -ne 0 ]; then
     log "ERROR" "Please run as root"