docker-test: downgrade 24.0.7

Checkpoint/restore with version 25.0.0-beta.1 fails
with the following error:

$ docker start --checkpoint=c1 cr
Error response from daemon: failed to create task for container: content digest fdb1054b00a8c07f08574ce52198c5501d1f552b6a5fb46105c688c70a9acb45: not found: unknown

Release notes:
moby/moby#46816

Signed-off-by: Radostin Stoyanov <rstoyanov@fedoraproject.org>

scripts/ci/docker-test.sh

@@ -15,10 +15,15 @@ add-apt-repository \
    $(lsb_release -cs) \
    stable test"
 
-./apt-install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
+# checkpoint/restore is broken in Docker Engine (Community) version 25.0.0-beta.1
+# Downgrade to 24.0.7
+sudo apt-get remove -y docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin docker-ce-rootless-extras
 
-# shellcheck source=/dev/null
-. /etc/lsb-release
+wget https://download.docker.com/linux/ubuntu/dists/focal/pool/stable/amd64/docker-ce-cli_24.0.7-1~ubuntu.20.04~focal_amd64.deb
+wget https://download.docker.com/linux/ubuntu/dists/focal/pool/stable/amd64/containerd.io_1.6.9-1_amd64.deb
+wget https://download.docker.com/linux/ubuntu/dists/focal/pool/stable/amd64/docker-ce_24.0.7-1~ubuntu.20.04~focal_amd64.deb
+
+sudo dpkg -i *.deb
 
 # docker checkpoint and restore is an experimental feature
 echo '{ "experimental": true }' > /etc/docker/daemon.json