create ostree user sudoers file

In the context of compatibility with edge-management when creating image ISO artifact.
When creating an ostree user, the user is created with username and ssh-key without a password, the user has no possibility to manage the system as has no password to enter when using sudo command.
Create a sudoer file at first boot stage.
FIXES: https://issues.redhat.com/browse/THEEDGE-3837

pkg/manifest/os.go

@@ -806,6 +806,13 @@ func usersFirstBootOptions(users []users.User) *osbuild.FirstBootStageOptions {
 			cmds = append(cmds, fmt.Sprintf("mkdir -p %s", sshdir))
 			cmds = append(cmds, fmt.Sprintf("sh -c 'echo %q >> %q'", *user.Key, filepath.Join(sshdir, "authorized_keys")))
 			cmds = append(cmds, fmt.Sprintf("chown %s:%s -Rc %s", user.Name, user.Name, sshdir))
+			if user.Name != "root" {
+				sudoersPath := filepath.Join("/etc", "sudoers.d")
+				sudoersUserFilePath := filepath.Join(sudoersPath, user.Name)
+				cmds = append(cmds, fmt.Sprintf(`sh -c 'echo -e "%s\tALL=(ALL)\tNOPASSWD: ALL" >> %q'`, user.Name, sudoersUserFilePath))
+				cmds = append(cmds, fmt.Sprintf("chmod 440 %s", sudoersUserFilePath))
+				cmds = append(cmds, fmt.Sprintf("restorecon -rvF %s", sudoersPath))
+			}
 		}
 	}
 	cmds = append(cmds, fmt.Sprintf("restorecon -rvF %s", varhome))

pkg/manifest/os_test.go

@@ -3,6 +3,7 @@ package manifest
 import (
 	"testing"
 
+	"github.com/osbuild/images/pkg/customizations/users"
 	"github.com/osbuild/images/pkg/osbuild"
 	"github.com/osbuild/images/pkg/platform"
 	"github.com/osbuild/images/pkg/rpmmd"
@@ -152,3 +153,74 @@ func TestRhcInsightsPackages(t *testing.T) {
 	}
 	CheckPkgSetInclude(t, os.getPackageSetChain(DISTRO_NULL), []string{"rhc", "subscription-manager", "insights-client"})
 }
+
+func TestCustomizationsUsersCommands(t *testing.T) {
+	testCases := []struct {
+		Name             string
+		OSTreeRef        string
+		UserName         string
+		UserSSHKey       string
+		ExpectedCommands []string
+	}{
+		{
+			Name:       "pipeline stage commands with regular user should be valid",
+			OSTreeRef:  "rhel/9/x86_64/edge",
+			UserName:   "test-user",
+			UserSSHKey: "ssh-rsa test-user",
+			ExpectedCommands: []string{
+				"mkdir -p /var/home/test-user/.ssh",
+				`sh -c 'echo "ssh-rsa test-user" >> "/var/home/test-user/.ssh/authorized_keys"'`,
+				"chown test-user:test-user -Rc /var/home/test-user/.ssh",
+				`sh -c 'echo -e "test-user\tALL=(ALL)\tNOPASSWD: ALL" >> "/etc/sudoers.d/test-user"'`,
+				"chmod 440 /etc/sudoers.d/test-user",
+				"restorecon -rvF /etc/sudoers.d",
+				"restorecon -rvF /var/home",
+				"restorecon -rvF /var/roothome",
+			},
+		},
+		{
+			Name:       "pipeline stages commands with root user should be valid",
+			OSTreeRef:  "rhel/9/x86_64/edge",
+			UserName:   "root",
+			UserSSHKey: "ssh-rsa test-root",
+			ExpectedCommands: []string{
+				"mkdir -p /var/roothome/.ssh",
+				`sh -c 'echo "ssh-rsa test-root" >> "/var/roothome/.ssh/authorized_keys"'`,
+				"chown root:root -Rc /var/roothome/.ssh",
+				"restorecon -rvF /var/home",
+				"restorecon -rvF /var/roothome",
+			},
+		},
+		{
+			Name:             "pipeline stages commands should not be generated when OSTreeRef empty",
+			OSTreeRef:        "",
+			UserName:         "test-user",
+			UserSSHKey:       "ssh-rsa test-user",
+			ExpectedCommands: []string{},
+		},
+	}
+
+	for _, testCase := range testCases {
+		testCase := testCase
+		t.Run(testCase.Name, func(t *testing.T) {
+			os := NewTestOS()
+			os.OSTreeRef = testCase.OSTreeRef
+			os.Users = append(os.Users, users.User{Name: testCase.UserName, Key: &testCase.UserSSHKey})
+			pipeline := os.serialize()
+			// check if first boot stage exist in pipeline stages
+			firstBootStageExist := false
+			for _, s := range pipeline.Stages {
+				if s.Type == "org.osbuild.first-boot" {
+					firstBootStageExist = true
+					break
+				}
+			}
+			if len(testCase.ExpectedCommands) > 0 {
+				require.True(t, firstBootStageExist, "no first boot stage was generated")
+				CheckFirstBootStageOptions(t, pipeline.Stages, testCase.ExpectedCommands)
+			} else {
+				assert.False(t, firstBootStageExist, "first boot stage was generated")
+			}
+		})
+	}
+}