image lookup: do not match *any* tags

For reasons buried in the history of Podman, looking up an untagged
image would match any tag of matching image. For instance, looking up
centos would match a local image centos:foobar.  Change that behavior
to only match the latest tag.

Fix: #11964
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>

vendor/github.com/containers/common/pkg/config/default.go

@@ -190,6 +190,7 @@ func DefaultConfig() (*Config, error) {
 			IPCNS:              "private",
 			LogDriver:          defaultLogDriver(),
 			LogSizeMax:         DefaultLogSizeMax,
+			NetNS:              "private",
 			NoHosts:            false,
 			PidsLimit:          DefaultPidsLimit,
 			PidNS:              "private",
@@ -225,7 +226,7 @@ func defaultSecretConfig() SecretConfig {
 func defaultMachineConfig() MachineConfig {
 	return MachineConfig{
 		CPUs:     1,
-		DiskSize: 10,
+		DiskSize: 100,
 		Image:    "testing",
 		Memory:   2048,
 	}
@@ -243,6 +244,8 @@ func defaultConfigFromMemory() (*EngineConfig, error) {
 
 	c.EventsLogFilePath = filepath.Join(c.TmpDir, "events", "events.log")
 
+	c.CompatAPIEnforceDockerHub = true
+
 	if path, ok := os.LookupEnv("CONTAINERS_STORAGE_CONF"); ok {
 		types.SetDefaultConfigFilePath(path)
 	}