updated spring boot doc

scenarios/SpringBoot/spring-boot.md

@@ -1,41 +1,26 @@
 # SpringBootDemo
-Spring Boot application that we will deploy to Kubernetes clusters in all 3 clouds
 
-# Building and deploying the docker image: 
-```bash
-sudo apt-get install -y default-jdk maven
-```
-```bash
-mvn clean install
-```
-```bash
-mvn spring-boot:run  
-```
-```bash
-docker build -t spring-boot-demo.jar .
-docker run -p 9091:8080 spring-boot-demo.jar
-```
+Spring Boot application that we will deploy to Kubernetes clusters in Azure.
 
-# Deploying to VM
-
-## Azure 
+## Deploying to VM
 
 ### Create and connect to the VM 
-Set up parameter variables: 
-
-```bash
-export SUBSCRIPTION=ad70ac39-7cb2-4ed2-8678-f192bc4272b6 # customize this
-export RESOURCE_GROUP=SpringBoot # customize this
-export REGION=westus2 # customize this
-export VM_NAME=springboot-vm
-export VM_IMAGE=UbuntuLTS
-export ADMIN_USERNAME=vm-admin-name # customize this
-```
 
 Log in and create VM: 
 
 ```bash
+export RANDOM_ID="$(openssl rand -hex 3)"
+export RESOURCE_GROUP="SpringBoot$RANDOM_ID"
+export REGION="westus2"
+
 az group create --name ${RESOURCE_GROUP} --location ${REGION}
+```
+
+```bash
+export VM_NAME="springboot-vm$RANDOM_ID"
+export ADMIN_USERNAME="vm-admin-name$RANDOM_ID"
+export VM_IMAGE="Ubuntu2204"
+
 az vm create \
   --resource-group ${RESOURCE_GROUP} \
   --name ${VM_NAME} \
@@ -48,7 +33,7 @@ az vm create \
 Store the VM IP address for later: 
 
 ```bash
-VM_IP_ADDRESS=`az vm show -d -g ${RESOURCE_GROUP} -n ${VM_NAME} --query publicIps -o tsv` 
+export VM_IP_ADDRESS=`az vm show -d -g ${RESOURCE_GROUP} -n ${VM_NAME} --query publicIps -o tsv` 
 ```
 
 Run the following to open port 8080 on the vm since SpringBoot uses it
@@ -60,17 +45,17 @@ az vm open-port --port 8080 --resource-group ${RESOURCE_GROUP} --name ${VM_NAME}
 Connect to the VM: 
 
 ```bash
-ssh ${ADMIN_USERNAME}@${VM_IP_ADDRESS}
+ssh -o StrictHostKeyChecking=no -t ${ADMIN_USERNAME}@${VM_IP_ADDRESS}
 ```
 
 ### Deploy the application
 
 Install Java and maven needed for application
 
 ```bash
-sudo apt update
-sudo apt install default-jdk
-sudo apt install maven
+sudo apt-get update
+sudo apt-get install default-jdk
+sudo apt-get install maven
 ```
 
 Now it's time to clone the project into the vm and give it proper permissions: 
@@ -83,9 +68,20 @@ sudo chmod -R 777 /opt/SpringBootDemo/
 ```
 
 Run and deploy the app
+
 ```bash
 mvn clean install
 mvn spring-boot:run  
 ```
 
-Finally go to http://[$VM_IP_ADDRESS]:8080 to confirm that it's working :D :D :D 
+### Verify the application
+
+Finally, go to http://[$VM_IP_ADDRESS]:8080 to confirm that it's working :D :D :D
+
+To verify if the application is running, you can use the `curl` command:
+
+```bash
+curl http://[$VM_IP_ADDRESS]:8080
+```
+
+If the application is running, you should see the HTML content of the Spring Boot application's home page.