inspect, image: alias .Config.HealthCheck to .HealthCheck for compatibility

Support inspecting image healthcheck using docker supported
`.Config.HealthCheck` by aliasing field to `.HealthCheck`

Now supports

```Console
podman image inspect -f "{{.Config.Healthcheck}}" imagename
```

Closes: https://github.com/containers/podman/issues/14661

Signed-off-by: Aditya R <arajan@redhat.com>

2 files changed, 21 insertions, 2 deletions

diff --git a/cmd/podman/inspect/inspect.go b/cmd/podman/inspect/inspect.go
index edddf026e..d519bc7d9 100644
--- a/cmd/podman/inspect/inspect.go
+++ b/cmd/podman/inspect/inspect.go
@@ -201,7 +201,7 @@ func (i *inspector) inspect(namesOrIDs []string) error {
 		err = printJSON(data)
 	default:
 		// Landing here implies user has given a custom --format
-		row := inspectNormalize(i.options.Format)
+		row := inspectNormalize(i.options.Format, tmpType)
 		row = report.NormalizeFormat(row)
 		row = report.EnforceRange(row)
 		err = printTmpl(tmpType, row, data)
@@ -300,7 +300,7 @@ func (i *inspector) inspectAll(ctx context.Context, namesOrIDs []string) ([]inte
 	return data, allErrs, nil
 }
 
-func inspectNormalize(row string) string {
+func inspectNormalize(row string, inspectType string) string {
 	m := regexp.MustCompile(`{{\s*\.Id\s*}}`)
 	row = m.ReplaceAllString(row, "{{.ID}}")
 
@@ -309,5 +309,18 @@ func inspectNormalize(row string) string {
 		".Dst", ".Destination",
 		".ImageID", ".Image",
 	)
+
+	// If inspect type is `image` we need to replace
+	// certain additional fields like `.Config.HealthCheck`
+	// but don't want to replace them for other inspect types.
+	if inspectType == common.ImageType {
+		r = strings.NewReplacer(
+			".Src", ".Source",
+			".Dst", ".Destination",
+			".ImageID", ".Image",
+			".Config.Healthcheck", ".HealthCheck",
+		)
+	}
+
 	return r.Replace(row)
 }
diff --git a/test/e2e/healthcheck_run_test.go b/test/e2e/healthcheck_run_test.go
index fd4e763f9..969f83b19 100644
--- a/test/e2e/healthcheck_run_test.go
+++ b/test/e2e/healthcheck_run_test.go
@@ -317,6 +317,12 @@ HEALTHCHECK CMD ls -l / 2>&1`, ALPINE)
 		session.WaitWithDefaultTimeout()
 		Expect(session).Should(Exit(0))
 
+		// Check if image inspect contains CMD-SHELL generated by healthcheck.
+		session = podmanTest.Podman([]string{"image", "inspect", "--format", "{{.Config.Healthcheck}}", "test"})
+		session.WaitWithDefaultTimeout()
+		Expect(session).Should(Exit(0))
+		Expect(session.OutputToString()).To(ContainSubstring("CMD-SHELL"))
+
 		run := podmanTest.Podman([]string{"run", "-dt", "--name", "hctest", "test", "ls"})
 		run.WaitWithDefaultTimeout()
 		Expect(run).Should(Exit(0))