Add integration test

hack/images/kicbase.Dockerfile

@@ -15,26 +15,17 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     # libglib2.0-0 is required for conmon, which is required for podman
     libglib2.0-0=2.62.1-1 \
     && rm /etc/crictl.yaml
-
 # install cri-o based on https://github.com/cri-o/cri-o/commit/96b0c34b31a9fc181e46d7d8e34fb8ee6c4dc4e1#diff-04c6e90faac2675aa89e2176d2eec7d8R128
-ENV CRIO_VERSION="1.17=1.17.3~2"
 RUN sh -c "echo 'deb http://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/xUbuntu_19.10/ /' > /etc/apt/sources.list.d/devel:kubic:libcontainers:stable.list" && \    
     curl -LO https://download.opensuse.org/repositories/devel:kubic:libcontainers:stable/xUbuntu_19.10/Release.key && \
     apt-key add - < Release.key && apt-get update && \
-    apt-get install -y --no-install-recommends cri-o-${CRIO_VERSION}
-
+    apt-get install -y --no-install-recommends cri-o-1.17=1.17.2~1
 # install podman
-ENV PODMAN_VERSION=1.9.0~2
-RUN apt-get install -y --no-install-recommends podman=${PODMAN_VERSION}
-
+RUN apt-get install -y --no-install-recommends podman=1.8.2~144
 # disable non-docker runtimes by default
 RUN systemctl disable containerd && systemctl disable crio && rm /etc/crictl.yaml
-
-# copy over docker daemon config which sets cgroup manager to systemd
-COPY hack/images/daemon.json /etc/docker/daemon.json
 # enable docker which is default
 RUN systemctl enable docker
-
 # making SSH work for docker container 
 # based on https://github.com/rastasheep/ubuntu-sshd/blob/master/18.04/Dockerfile
 RUN mkdir /var/run/sshd

test/integration/docker_test.go

@@ -63,3 +63,30 @@ func TestDockerFlags(t *testing.T) {
 		}
 	}
 }
+
+func TestForceSystemd(t *testing.T) {
+	if NoneDriver() {
+		t.Skip("skipping: none driver does not support ssh or bundle docker")
+	}
+	MaybeParallel(t)
+
+	profile := UniqueProfileName("force-systemd")
+	ctx, cancel := context.WithTimeout(context.Background(), Minutes(30))
+	defer CleanupWithLogs(t, profile, cancel)
+
+	// Use the most verbose logging for the simplest test. If it fails, something is very wrong.
+	args := append([]string{"start", "-p", profile, "--force-systemd", "--alsologtostderr", "-v=5"}, StartArgs()...)
+	rr, err := Run(t, exec.CommandContext(ctx, Target(), args...))
+	if err != nil {
+		t.Errorf("failed to start minikube with args: %q : %v", rr.Command(), err)
+	}
+
+	rr, err = Run(t, exec.CommandContext(ctx, Target(), "-p", profile, "ssh", "docker info --format {{.CgroupDriver}}"))
+	if err != nil {
+		t.Errorf("failed to get docker cgroup driver. args %q: %v", rr.Command(), err)
+	}
+
+	if !strings.Contains(rr.Output(), "systemd") {
+		t.Fatalf("expected systemd cgroup driver, got: %v", rr.Output())
+	}
+}