run, create: add --passwd-entry

It allows to customize the entry that is written to the `/etc/passwd`
file when --passwd is used.

Closes: https://github.com/containers/podman/issues/13185

Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>

4 files changed, 12 insertions, 0 deletions

diff --git a/pkg/domain/entities/pods.go b/pkg/domain/entities/pods.go
index f1d445c4b..1e25e0872 100644
--- a/pkg/domain/entities/pods.go
+++ b/pkg/domain/entities/pods.go
@@ -272,6 +272,8 @@ type ContainerCreateOptions struct {
 	Net *NetOptions `json:"net,omitempty"`
 
 	CgroupConf []string
+
+	PasswdEntry string
 }
 
 func NewInfraContainerCreateOptions() ContainerCreateOptions {
diff --git a/pkg/specgen/generate/container_create.go b/pkg/specgen/generate/container_create.go
index 6a611e854..b85a87742 100644
--- a/pkg/specgen/generate/container_create.go
+++ b/pkg/specgen/generate/container_create.go
@@ -286,6 +286,9 @@ func createContainerOptions(ctx context.Context, rt *libpod.Runtime, s *specgen.
 	if s.Volatile {
 		options = append(options, libpod.WithVolatile())
 	}
+	if s.PasswdEntry != "" {
+		options = append(options, libpod.WithPasswdEntry(s.PasswdEntry))
+	}
 
 	useSystemd := false
 	switch s.Systemd {
diff --git a/pkg/specgen/specgen.go b/pkg/specgen/specgen.go
index dfac1d457..79e20667b 100644
--- a/pkg/specgen/specgen.go
+++ b/pkg/specgen/specgen.go
@@ -206,6 +206,8 @@ type ContainerBasicConfig struct {
 	UnsetEnvAll bool `json:"unsetenvall,omitempty"`
 	// Passwd is a container run option that determines if we are validating users/groups before running the container
 	Passwd *bool `json:"manage_password,omitempty"`
+	// PasswdEntry specifies arbitrary data to append to a file.
+	PasswdEntry string `json:"passwd_entry,omitempty"`
 }
 
 // ContainerStorageConfig contains information on the storage configuration of a
diff --git a/pkg/specgenutil/specgen.go b/pkg/specgenutil/specgen.go
index 7d4fca846..42b66d909 100644
--- a/pkg/specgenutil/specgen.go
+++ b/pkg/specgenutil/specgen.go
@@ -832,6 +832,11 @@ func FillOutSpecGen(s *specgen.SpecGenerator, c *entities.ContainerCreateOptions
 	if s.Passwd == nil {
 		s.Passwd = &t
 	}
+
+	if len(s.PasswdEntry) == 0 || len(c.PasswdEntry) != 0 {
+		s.PasswdEntry = c.PasswdEntry
+	}
+
 	return nil
 }