Replace command line Docker image build with Gradle Jib plugin

README.md

@@ -118,7 +118,7 @@ Now to run a new Fineract instance you can simply:
 
 1. `git clone https://github.com/apache/fineract.git ; cd fineract`
 1. for windows, use `git clone https://github.com/apache/fineract.git --config core.autocrlf=input ; cd fineract`
-1. `docker-compose build`
+1. `./gradlew :fineract-provider:jibDockerBuild -x test`
 1. `docker-compose up -d`
 1. fineract (back-end) is running at https://localhost:8443/fineract-provider/
 1. wait for https://localhost:8443/fineract-provider/actuator/health to return `{"status":"UP"}`
@@ -126,8 +126,6 @@ Now to run a new Fineract instance you can simply:
 1. community-app (UI) is running at http://localhost:9090/?baseApiUrl=https://localhost:8443/fineract-provider&tenantIdentifier=default
 1. login using default _username_ `mifos` and _password_ `password`
 
-The [`docker-compose.yml`](docker-compose.yml) will build the `fineract` container from the source based on the [`Dockerfile`](Dockerfile).  You could change that to use the pre-built container image instead of having to re-build it.
-
 https://hub.docker.com/r/apache/fineract has a pre-built container image of this project, built continuously.
 
 You must specify the MySQL tenants database JDBC URL by passing it to the `fineract` container via environment