fix variables in lab 1

1-getting-started/README.md

@@ -118,6 +118,9 @@ Now lets run some code.
 First lets initialise our terraform/tofu environment:
 
 ```bash
+cd 1-getting-started/code/
 tofu init
 ```
 
+![tofu init output on screen](./img/tofu-init.png)
+

1-getting-started/code/variables.tf

@@ -9,3 +9,28 @@ variable "environment" {
   type        = string
   default     = "dev"
 }
+
+variable "private_subnet_suffix" {
+  description = "Suffix to append to private subnets name"
+  type        = string
+  default     = "private-"
+}
+
+variable "public_subnet_suffix" {
+  description = "Suffix to append to public subnets name"
+  type        = string
+  default     = "public-"
+}
+
+variable "database_subnet_suffix" {
+  description = "Suffix to append to database subnets name"
+  type        = string
+  default     = "rds-"
+}
+
+variable "additional_tags" {
+  description = "Additional default resource tags"
+  type        = map(string)
+  default     = {}
+}
+