Implement no_create_home for users

lib/tiny-cloud/user-data/alpine-config

@@ -270,7 +270,8 @@ in_list() {
 init__userdata_users() {
 	local users="$(get_userdata users)"
 	for i in $users; do
-		local name gecos homedir shell system=false lock_passwd=true
+		local name gecos homedir shell
+		local system=false no_create_home=false lock_passwd=true
 		local keys="$(get_userdata users/$i)"
 		if [ "$i" = 1 ] && [ "$keys" = "default" ]; then
 			continue
@@ -292,6 +293,9 @@ init__userdata_users() {
 		if in_list system $keys; then
 			system="$(get_userdata users/$i/system)"
 		fi
+		if in_list no_create_home $keys; then
+			no_create_home="$(get_userdata users/$i/no_create_home)"
+		fi
 
 		if getent passwd "$user" >/dev/null; then
 			log -i -t "$phase" info "$ACTION: user $user already exists"
@@ -299,7 +303,10 @@ init__userdata_users() {
 			if [ "$system" != "true" ]; then
 				unset system
 			fi
-			$MOCK adduser -D ${gecos:+-g "$gecos"} ${homedir:+-h "$homedir"} ${shell:+-s "$shell"} ${system:+-S} "$name"
+			if [ "$no_create_home" != "true" ]; then
+				unset no_create_home
+			fi
+			$MOCK adduser -D ${gecos:+-g "$gecos"} ${homedir:+-h "$homedir"} ${shell:+-s "$shell"} ${system:+-S} ${no_create_home:+-H} "$name"
 		fi
 
 		if in_list lock_passwd $keys; then

tests/tiny-cloud-alpine.test

@@ -23,6 +23,7 @@ init_tests \
 	userdata_users_homedir \
 	userdata_users_shell \
 	userdata_users_system \
+	userdata_users_no_create_home \
 	userdata_users_lock_passwd \
 	userdata_users_ssh_authorized_keys \
 	userdata_ssh_authorized_keys \
@@ -264,6 +265,22 @@ userdata_users_system_body() {
 		tiny-cloud main
 }
 
+userdata_users_no_create_home_body() {
+	# first specified user will replace default user
+	fake_userdata_nocloud <<-EOF
+		#alpine-config
+		users:
+		  - default
+		  - name: foo
+		    no_create_home: true
+	EOF
+	atf_check -e ignore -o ignore tiny-cloud early
+	atf_check \
+		-e match:"userdata_users: done" \
+		-o match:"adduser.*-H.*foo" \
+		tiny-cloud main
+}
+
 userdata_users_lock_passwd_body() {
 	# first specified user will replace default user
 	fake_userdata_nocloud <<-EOF