Hide container/image Command details for quadlets

Quadlets have an `EntryPoint` and no `Command` so for quadlets we would
have shown an empty `Command` which isn't terribly useful or
informative.

src/ContainerDetails.jsx

@@ -37,10 +37,12 @@ const ContainerDetails = ({ container }) => {
                         <DescriptionListTerm>{_("Image")}</DescriptionListTerm>
                         <DescriptionListDescription>{container.ImageName}</DescriptionListDescription>
                     </DescriptionListGroup>
+                    {container.Config?.Cmd &&
                     <DescriptionListGroup>
                         <DescriptionListTerm>{_("Command")}</DescriptionListTerm>
-                        <DescriptionListDescription>{utils.quote_cmdline(container.Config?.Cmd)}</DescriptionListDescription>
+                        <DescriptionListDescription>{utils.quote_cmdline(container.Config.Cmd)}</DescriptionListDescription>
                     </DescriptionListGroup>
+                    }
                 </DescriptionList>
             </FlexItem>
             <FlexItem>

src/ImageDetails.jsx

@@ -12,7 +12,7 @@ const _ = cockpit.gettext;
 const ImageDetails = ({ containers, image, showAll }) => {
     return (
         <DescriptionList className='image-details' isAutoFit>
-            {image.Command !== "" &&
+            {image.Command &&
             <DescriptionListGroup>
                 <DescriptionListTerm>{_("Command")}</DescriptionListTerm>
                 <DescriptionListDescription>{utils.quote_cmdline(image.Command)}</DescriptionListDescription>

test/check-application

@@ -912,6 +912,37 @@ class TestApplication(testlib.MachineCase):
         b.wait_not_in_text("#containers-images", "<none>:<none>")
         b.wait_not_in_text("#containers-containers", IMG_INTERMEDIATE)
 
+        # Image without a Command, shows no Command. This is common for podman quadlets
+        IMG_ENTRYPOINT = "localhost/test-entrypoint"
+        tmpdir = self.execute(auth, "mktemp -d").strip()
+        self.addCleanup(self.execute, auth, f"rm -r {tmpdir}")
+        self.execute(auth, f"echo 'FROM {IMG_REGISTRY}\nENTRYPOINT /entrypoint' > {tmpdir}/Dockerfile")
+        self.execute(auth, f"podman build -t {IMG_ENTRYPOINT} {tmpdir}")
+
+        b.click(f"#containers-images tr:contains('{IMG_ENTRYPOINT}') td.pf-v5-c-table__toggle button")
+        b.wait_in_text("#containers-images tbody.pf-m-expanded tr .image-details", "/bin/sh -c /entrypoint")
+        b.wait_not_in_text("#containers-images tbody.pf-m-expanded tr .image-details", "Command")
+
+        b.click(f'#containers-images tbody tr:contains("{IMG_ENTRYPOINT}") .ct-container-create')
+        b.wait_visible('div.pf-v5-c-modal-box header:contains("Create container")')
+        b.set_input_text("#run-image-dialog-name", "no-cmd")
+        b.wait_visible("#run-image-dialog-command[value='']")
+        b.wait_text("#run-image-dialog-entrypoint", "/bin/sh -c /entrypoint")
+
+        b.click('.pf-v5-c-modal-box__footer #create-image-create-run-btn')
+        b.wait_not_present("div.pf-v5-c-modal-box")
+        self.waitContainerRow("no-cmd")
+        self.toggleExpandedContainer("no-cmd")
+        b.wait_in_text("#containers-containers tbody tr:contains('no-cmd')", IMG_ENTRYPOINT)
+        b.wait_not_in_text("#containers-containers tbody tr:contains('no-cmd')", "Command")
+
+        sha = self.execute(auth, f"podman inspect --format '{{{{.Id}}}}' {IMG_ENTRYPOINT}").strip()
+        entrypoint_sel = f"#containers-images tbody tr[data-row-id=\"{sha}{auth}\"]".lower()
+        clickDeleteImage(entrypoint_sel)
+        self.confirm_modal("Delete")
+        self.confirm_modal("Force delete")
+        b.wait_not_in_text("#containers-images", "<none>:<none>")
+
     def testCommitUser(self):
         self._testCommit(False)