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package build
import (
"fmt"
)
// ApplyUser wraps any build.Copy instructions as build.CopyAs using the given
// UID/GID.
//
func ApplyUser(uid uint, gid uint, instructions []Instruction) []Instruction {
applied := make([]Instruction, len(instructions))
for i, instruction := range instructions {
if copy, iscopy := instruction.(Copy); iscopy {
applied[i] = CopyAs{uid, gid, copy}
} else {
applied[i] = instruction
}
}
return applied
}
// Chown returns a build.Run instruction for setting ownership on the given
// path.
//
func Chown(uid uint, gid uint, path string) Run {
return Run{"chown %s:%s", []string{fmt.Sprint(uid), fmt.Sprint(gid), path}}
}
// CreateDirectory returns a build.Run instruction for creating the given
// directory.
//
func CreateDirectory(path string) Run {
return Run{"mkdir -p", []string{path}}
}
// CreateUser returns build.Run instructions for creating the given user
// account and group.
//
func CreateUser(name string, uid uint, gid uint) []Run {
return []Run{
{"groupadd -o -g %s -r", []string{fmt.Sprint(gid), name}},
{"useradd -o -m -d %s -r -g %s -u %s", []string{homeDir(name), name, fmt.Sprint(uid), name}},
}
}
// Home returns a build.Env instruction for setting the user's home directory.
//
func Home(name string) Env {
return Env{map[string]string{"HOME": homeDir(name)}}
}
func homeDir(name string) string {
if name == "root" {
return "/root"
}
return "/home/" + name
}
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