START : added the basic docker file required for containerization

[vignesh-6145]

Detailed changes

• Added a basic docker file
  • Base image : eclipse-temurin
  • JDK version been used : :17-jdk-alpine

Actions before running

• Check if current version of JDK i.e. version > 17 was added to the class path
• run the command ./mvnw install
• build the image ex :- docker build -t exp-mngr-app .
  • name of the image exp-mngr-app
• run the container by mapping the container port 8081 (since specified in applicatoin.properties) to any local port ex :- docker run -p 8082:8081 exp-mngr-app
  • local port : 8082
  • container port : 8081