Allow for use of podman for running containers in development.

[kannon92]

We migrated the generation of the python sdk code to use docker. Currently, we require that docker must be enabled on host to build.

Kubernetes/Kind actually allow the use of podman rather than docker.

It would be ideal to allow for either Podman or Docker for running the test code.

kehannon@kehannon-thinkpadp1gen4i:~/Work/jobset$ make test
test -s /home/kehannon/Work/jobset/bin/controller-gen && /home/kehannon/Work/jobset/bin/controller-gen --version | grep -q v0.11.4 || \
GOBIN=/home/kehannon/Work/jobset/bin go install sigs.k8s.io/controller-tools/cmd/controller-gen@v0.11.4
/home/kehannon/Work/jobset/bin/controller-gen \
        rbac:roleName=manager-role output:rbac:artifacts:config=config/components/rbac\
        crd:generateEmbeddedObjectMeta=true output:crd:artifacts:config=config/components/crd/bases\
        webhook output:webhook:artifacts:config=config/components/webhook\
        paths="./..."
go fmt ./...
go vet ./...
test -s /home/kehannon/Work/jobset/bin/setup-envtest || GOBIN=/home/kehannon/Work/jobset/bin go install sigs.k8s.io/controller-runtime/tools/setup-envtest@latest
echo "testing Python SDK..."
testing Python SDK...
./hack/python-sdk/test-sdk.sh
ERROR: Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?
make: *** [Makefile:130: test-python-sdk] Error 1

[danielvegamyhre]

Perhaps this is somewhat embarrassing but I actually haven't ever heard of Podman, how widely used is it? Changes look simple enough so I am fine with this (as long as we still default to docker, which I can see in the PR we do) but I'm just curious.

[kannon92]

Pod man is gaining traction. It’s a container engine written by Redhat and uses a lot of the same code that crio uses. It works a bit better with fedora/redhat.

[kannon92]

Perhaps this is somewhat embarrassing but I actually haven't ever heard of Podman, how widely used is it? Changes look simple enough so I am fine with this (as long as we still default to docker, which I can see in the PR we do) but I'm just curious.

I asked around and I was told that Podman has millions of users and podman desktop has been downloaded over 700k times.