Update README.md

docker/rpmbuild/README.md

@@ -7,12 +7,12 @@ For more information on docker and containerization technologies, refer to [offi
 ## Supported tags and respective `Dockerfile` links
 
 - `latest`, `8` [*(Dockerfile)*][2]
+- `rockylinux`[*(Dockerfile)*][7]
 - `7` [*(Dockerfile)*][3]
-- `6` [*(Dockerfile)*][7]
 
 ### Reference
 
-- Supported architectures ([*more info*][4]): `amd64`, `arm64v8`
+- Supported architectures ([*more info*][4]): `amd64`
 
 ## Integration
 
@@ -46,17 +46,16 @@ For CentOS 8
 $ docker pull teddysun/rpmbuild:8
 ```
 
-It can be found at [Docker Hub][6].
-
-## Start a container
-
-There is an example to start a container for CentOS 6 like below:
+For Rockylinux 8
 
 ```bash
-$ mkdir -m 777 -p /opt/builder6
-$ docker run -it --rm -h buildbot --name rpmbuild6 -v /opt/builder6:/home/builder/rpmbuild teddysun/rpmbuild:6
+$ docker pull teddysun/rpmbuild:rockylinux
 ```
 
+It can be found at [Docker Hub][6].
+
+## Start a container
+
 There is an example to start a container for CentOS 7 like below:
 
 ```bash
@@ -71,10 +70,17 @@ $ mkdir -m 777 -p /opt/builder8
 $ docker run -it --rm -h buildbot --name rpmbuild8 -v /opt/builder8:/home/builder/rpmbuild teddysun/rpmbuild:8
 ```
 
+There is an example to start a container for Rockylinux 8 like below:
+
+```bash
+mkdir -m 777 -p /opt/rockylinux
+docker run -it --rm -h buildbot --name rockylinux8 -v /opt/rockylinux:/home/builder/rpmbuild teddysun/rpmbuild:rockylinux
+```
+
 [1]: https://docs.docker.com/
 [2]: https://github.com/teddysun/across/blob/master/docker/rpmbuild/Dockerfile.centos8
 [3]: https://github.com/teddysun/across/blob/master/docker/rpmbuild/Dockerfile.centos7
 [4]: https://github.com/docker-library/official-images#architectures-other-than-amd64
 [5]: https://docs.docker.com/install/
 [6]: https://hub.docker.com/r/teddysun/rpmbuild/
-[7]: https://github.com/teddysun/across/blob/master/docker/rpmbuild/Dockerfile.centos6
+[7]: https://github.com/teddysun/across/blob/master/docker/rpmbuild/Dockerfile.rockylinux