On f29 based fedora-atomic command atomic install cockpit/ws failes with:
[Errno 2] No such file or directory: '/var/lib/atomic/install.json.lock' even though all commands of the install suceeded.
Two possible workarounds:
export ATOMIC_VAR_LIB=/var/lib/containers/atomic
mkdir /var/lib/atomic
After either of those workarounds atomic install cockpit/ws works as expected.
Also directly using docker as /usr/bin/docker run --rm --privileged -v /:/host cockpit/ws /container/atomic-install works just fine even without these workarounds.
$ rpm -q atomic
atomic-1.22.1-27.gitb507039.fc29.x86_64
$ cat /etc/os-release
NAME=Fedora
VERSION="29.20190625.0 (Atomic Host)"
...
OSTREE_VERSION=29.20190625.0