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exec.go
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exec.go
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package docker
import (
"io"
"os"
"os/exec"
)
func Command(args ...string) *containerCmd {
return &containerCmd{
args: args,
stderr: os.Stderr,
stdout: os.Stdout,
}
}
// containerCmd implements exec.Cmd for docker containers
type containerCmd struct {
nameOrID string // the container name or ID
args []string
env []string
stdin io.Reader
stdout io.Writer
stderr io.Writer
}
func (c *containerCmd) Run() error {
var args []string
// set env
for _, env := range c.env {
args = append(args, "-e", env)
}
args = append(
args,
// finally, with the caller args
c.args...,
)
cmd := exec.Command("docker", args...)
if c.stdin != nil {
cmd.Stdin = c.stdin
}
if c.stderr != nil {
cmd.Stderr = c.stderr
}
if c.stdout != nil {
cmd.Stdout = c.stdout
}
return cmd.Run()
}