package client import ( "encoding/base64" "encoding/json" "io" "net/http" "net/url" "regexp" "strconv" "golang.org/x/net/context" "github.com/docker/docker/api/types" "github.com/docker/docker/api/types/container" ) var headerRegexp = regexp.MustCompile(`\ADocker/.+\s\((.+)\)\z`) // ImageBuild sends request to the daemon to build images. // The Body in the response implement an io.ReadCloser and it's up to the caller to // close it. func (cli *Client) ImageBuild(ctx context.Context, buildContext io.Reader, options types.ImageBuildOptions) (types.ImageBuildResponse, error) { query, err := imageBuildOptionsToQuery(options) if err != nil { return types.ImageBuildResponse{}, err } headers := http.Header(make(map[string][]string)) buf, err := json.Marshal(options.AuthConfigs) if err != nil { return types.ImageBuildResponse{}, err } headers.Add("X-Registry-Config", base64.URLEncoding.EncodeToString(buf)) headers.Set("Content-Type", "application/tar") serverResp, err := cli.postRaw(ctx, "/build", query, buildContext, headers) if err != nil { return types.ImageBuildResponse{}, err } osType := GetDockerOS(serverResp.header.Get("Server")) return types.ImageBuildResponse{ Body: serverResp.body, OSType: osType, }, nil } func imageBuildOptionsToQuery(options types.ImageBuildOptions) (url.Values, error) { query := url.Values{ "t": options.Tags, } if options.SuppressOutput { query.Set("q", "1") } if options.RemoteContext != "" { query.Set("remote", options.RemoteContext) } if options.NoCache { query.Set("nocache", "1") } if options.Remove { query.Set("rm", "1") } else { query.Set("rm", "0") } if options.ForceRemove { query.Set("forcerm", "1") } if options.PullParent { query.Set("pull", "1") } if options.Squash { query.Set("squash", "1") } if !container.Isolation.IsDefault(options.Isolation) { query.Set("isolation", string(options.Isolation)) } query.Set("cpusetcpus", options.CPUSetCPUs) query.Set("cpusetmems", options.CPUSetMems) query.Set("cpushares", strconv.FormatInt(options.CPUShares, 10)) query.Set("cpuquota", strconv.FormatInt(options.CPUQuota, 10)) query.Set("cpuperiod", strconv.FormatInt(options.CPUPeriod, 10)) query.Set("memory", strconv.FormatInt(options.Memory, 10)) query.Set("memswap", strconv.FormatInt(options.MemorySwap, 10)) query.Set("cgroupparent", options.CgroupParent) query.Set("shmsize", strconv.FormatInt(options.ShmSize, 10)) query.Set("dockerfile", options.Dockerfile) ulimitsJSON, err := json.Marshal(options.Ulimits) if err != nil { return query, err } query.Set("ulimits", string(ulimitsJSON)) buildArgsJSON, err := json.Marshal(options.BuildArgs) if err != nil { return query, err } query.Set("buildargs", string(buildArgsJSON)) labelsJSON, err := json.Marshal(options.Labels) if err != nil { return query, err } query.Set("labels", string(labelsJSON)) return query, nil } // GetDockerOS returns the operating system based on the server header from the daemon. func GetDockerOS(serverHeader string) string { var osType string matches := headerRegexp.FindStringSubmatch(serverHeader) if len(matches) > 0 { osType = matches[1] } return osType }