Update README

README.md

@@ -1,51 +1,8 @@
 # toolbox - bring your tools with you
 
-rhcos-toolbox is a small script, designed for RHEL CoreOS, that launches a podman container to let you bring in your favorite debugging or admin tools.
+rhcos-toolbox is a small script, designed for RHEL CoreOS, that launches a
+podman container to let you bring in your favorite debugging or admin tools.
 
-## Usage
+This project is deprecated and in maintenance mode.
 
-```
-$ /usr/bin/toolbox
-Spawning container core-fedora-latest on /var/lib/toolbox/core-fedora-latest.
-Press ^] three times within 1s to kill container.
-[root@localhost ~]# dnf -y install tcpdump
-...
-[root@localhost ~]# tcpdump -i ens3
-tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
-listening on ens3, link-type EN10MB (Ethernet), capture size 65535 bytes
-```
-
-## Advanced Usage
-
-### Use a custom image
-
-toolbox uses a Fedora-based userspace environment by default, but this can be changed to any Docker image. Simply override environment variables in `$HOME/.toolboxrc`:
-
-```
-core@core-01 ~ $ cat ~/.toolboxrc
-REGISTRY=registry.redhat.io
-IMAGE=rhel7/rhel-tools:latest
-core@core-01 ~ $ toolbox
-Spawning a container 'toolbox-test' with image 'registry.redhat.io/rhel7/rhel-tools:latest'
-```
-
-### Automatically enter toolbox on login
-
-Set an `/etc/passwd` entry for one of the users to `/usr/bin/toolbox`:
-
-```sh
-useradd bob -m -p '*' -s /usr/bin/toolbox -U -G sudo,docker,rkt
-```
-
-Now when SSHing into the system as that user, toolbox will automatically be started:
-
-```
-$ ssh bob@hostname.example.com
-Container Linux by CoreOS alpha (1284.0.0)
-...
-Spawning container bob-fedora-latest on /var/lib/toolbox/bob-fedora-latest.
-Press ^] three times within 1s to kill container.
-[root@localhost ~]# dnf -y install emacs-nox
-...
-[root@localhost ~]# emacs /media/root/etc/systemd/system/docker.service
-```
+We recommend that you use https://github.com/containers/toolbox instead.