Tag docker build containers for easier ID
diff --git a/README.md b/README.md
index 14faed1..249037a 100644
--- a/README.md
+++ b/README.md
@@ -12,9 +12,9 @@
1. Create build images containing the build tool-chain, Java and an Apache Cassandra git working directory
* Debian:
- ```docker build -f docker/jessie-image.docker docker/```
+ ```docker build -t cass-build-debs -f docker/jessie-image.docker docker/```
* RPM:
- ```docker build -f docker/centos7-image.docker docker/```
+ ```docker build -t cass-build-rpms -f docker/centos7-image.docker docker/```
The image will contain a clone of the Apache git repository by default. Using a different repository is possible by adding the `--build-arg CASSANDRA_GIT_URL=https://github.com/myuser/cassandra.git` parameter. All successive builds will be executed based on the repository cloned during docker image creation.
2. Run build script through docker (specify branch, e.g. cassandra-3.0 and version, e.g. 3.0.11):
* Debian:
