Incorrect initialize Greeting Service

[archisova]

Hi, Thomas Vitale!

I noticed that when initializing the Greeting Service project from Chapter 02 - Begin, the link to spring.io starter is incorrectly specified. In your case, the link is https://start.spring.io/starter.tgz (!.tgz), with the key -o greeting-service.zip (!.zip) and when downloading the project, the archive turns out to be broken.
I will offer two solutions:

1. You can leave the tgz, but then the -o greeting-service.zip parameter must be removed and added at the end of | tar -xzvf -.
   For example for Gradle: curl https://start.spring.io/starter.tgz -d groupId=com.arcticgreetings -d artifactId=greeting-service -d name=greeting-service -d packageName=com.arcticgreetings.greetingservice -d dependencies=web -d javaVersion=16 -d bootVersion=2.5.2 -d type=gradle-project | tar -xzvf -

2. You can change the starter link by specifying it https://start.spring.io/starter.zip
   For example for Gardle: curl https://start.spring.io/starter.zip -d groupId=com.arcticgreetings -d artifactId=greeting-service -d name=greeting-service -d packageName=com.arcticgreetings.greetingservice -d dependencies=web -d javaVersion=16 -d bootVersion=2.5.2 -d type=gradle-project -o greeting-service.zip

[ThomasVitale]

@archisova thanks for reporting the issue. I fixed it and merged it in #6