enter: fix handle containers that have environment variables shorter …

…than 5 (#1545)

distrobox-enter

@@ -541,8 +541,8 @@ container_status="unknown"
 eval "$(${container_manager} inspect --type container --format \
 	'container_status={{.State.Status}};
 	unshare_groups={{ index .Config.Labels "distrobox.unshare_groups" }};
-	{{range .Config.Env}}{{if slice . 0 5 | eq "HOME="}}container_home={{slice . 5 | printf "%q"}};{{end}}{{end}}
-	{{range .Config.Env}}{{if slice . 0 5 | eq "PATH="}}container_path={{slice . 5 | printf "%q"}}{{end}}{{end}}' \
+	{{range .Config.Env}}{{if and (ge (len .) 5) (eq (slice . 0 5) "HOME=")}}container_home={{slice . 5 | printf "%q"}}{{end}}{{end}};
+	{{range .Config.Env}}{{if and (ge (len .) 5) (eq (slice . 0 5) "PATH=")}}container_path={{slice . 5 | printf "%q"}}{{end}}{{end}}' \
 	"${container_name}")"
 
 # dry run mode, just generate the command and print it. No execution.

distrobox-rm

@@ -359,7 +359,7 @@ delete_container()
 	# Retrieve container's HOME, and check if it's different from host's one. In
 	# this case we prompt for deletion of the custom home.
 	container_home=$(${container_manager} inspect --type container --format \
-		'{{range .Config.Env}}{{if slice . 0 5 | eq "HOME="}}{{slice . 5}}{{end}}{{end}}' "${container_name}")
+		'{{range .Config.Env}}{{if and (ge (len .) 5) (eq (slice . 0 5) "HOME=")}}{{slice . 5 | printf "%q"}}{{end}}{{end}}' "${container_name}")
 	# Prompt for confirmation
 	if [ "${container_home}" != "${HOME}" ]; then
 		if [ "${non_interactive}" -eq 0 ] &&