Centralized Docker configuration (#38) (#70)

docker/Dockerfile

pom.xml

spring-petclinic-admin-server/pom.xml

spring-petclinic-api-gateway/pom.xml

spring-petclinic-api-gateway/src/main/docker/Dockerfile

spring-petclinic-config-server/pom.xml

spring-petclinic-config-server/src/main/docker/Dockerfile

spring-petclinic-customers-service/pom.xml

...ng-petclinic-customers-service/src/main/docker/Dockerfile

spring-petclinic-discovery-server/pom.xml

spring-petclinic-discovery-server/src/main/docker/Dockerfile

spring-petclinic-tracing-server/pom.xml

spring-petclinic-tracing-server/src/main/docker/Dockerfile

spring-petclinic-vets-service/pom.xml

spring-petclinic-vets-service/src/main/docker/Dockerfile

spring-petclinic-visits-service/pom.xml

spring-petclinic-visits-service/src/main/docker/Dockerfile