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|
package docker
import (
"context"
"encoding/json"
"errors"
"net/http"
"strings"
)
// ErrContainerAlreadyExists is the error returned by CreateContainer when the
// container already exists.
var ErrContainerAlreadyExists = errors.New("container already exists")
// CreateContainerOptions specify parameters to the CreateContainer function.
//
// See https://goo.gl/tyzwVM for more details.
type CreateContainerOptions struct {
Name string
Config *Config `qs:"-"`
HostConfig *HostConfig `qs:"-"`
NetworkingConfig *NetworkingConfig `qs:"-"`
Context context.Context
}
// CreateContainer creates a new container, returning the container instance,
// or an error in case of failure.
//
// The returned container instance contains only the container ID. To get more
// details about the container after creating it, use InspectContainer.
//
// See https://goo.gl/tyzwVM for more details.
func (c *Client) CreateContainer(opts CreateContainerOptions) (*Container, error) {
path := "/containers/create?" + queryString(opts)
resp, err := c.do(
http.MethodPost,
path,
doOptions{
data: struct {
*Config
HostConfig *HostConfig `json:"HostConfig,omitempty" yaml:"HostConfig,omitempty" toml:"HostConfig,omitempty"`
NetworkingConfig *NetworkingConfig `json:"NetworkingConfig,omitempty" yaml:"NetworkingConfig,omitempty" toml:"NetworkingConfig,omitempty"`
}{
opts.Config,
opts.HostConfig,
opts.NetworkingConfig,
},
context: opts.Context,
},
)
var e *Error
if errors.As(err, &e) {
if e.Status == http.StatusNotFound && strings.Contains(e.Message, "No such image") {
return nil, ErrNoSuchImage
}
if e.Status == http.StatusConflict {
return nil, ErrContainerAlreadyExists
}
// Workaround for 17.09 bug returning 400 instead of 409.
// See https://github.com/moby/moby/issues/35021
if e.Status == http.StatusBadRequest && strings.Contains(e.Message, "Conflict.") {
return nil, ErrContainerAlreadyExists
}
}
if err != nil {
return nil, err
}
defer resp.Body.Close()
var container Container
if err := json.NewDecoder(resp.Body).Decode(&container); err != nil {
return nil, err
}
container.Name = opts.Name
return &container, nil
}
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