mirror of https://github.com/docker/buildx.git
72 lines
1.7 KiB
Go
72 lines
1.7 KiB
Go
package build
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import (
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"context"
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"os"
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"path/filepath"
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"github.com/docker/buildx/driver"
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"github.com/docker/buildx/util/progress"
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"github.com/moby/buildkit/client"
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"github.com/moby/buildkit/client/llb"
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gwclient "github.com/moby/buildkit/frontend/gateway/client"
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"github.com/pkg/errors"
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)
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func createTempDockerfileFromURL(ctx context.Context, d driver.Driver, url string, pw progress.Writer) (string, error) {
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c, err := driver.Boot(ctx, ctx, d, pw)
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if err != nil {
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return "", err
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}
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var out string
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ch, done := progress.NewChannel(pw)
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defer func() { <-done }()
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_, err = c.Build(ctx, client.SolveOpt{}, "buildx", func(ctx context.Context, c gwclient.Client) (*gwclient.Result, error) {
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def, err := llb.HTTP(url, llb.Filename("Dockerfile"), llb.WithCustomNamef("[internal] load %s", url)).Marshal(ctx)
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if err != nil {
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return nil, err
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}
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res, err := c.Solve(ctx, gwclient.SolveRequest{
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Definition: def.ToPB(),
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})
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if err != nil {
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return nil, err
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}
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ref, err := res.SingleRef()
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if err != nil {
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return nil, err
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}
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stat, err := ref.StatFile(ctx, gwclient.StatRequest{
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Path: "Dockerfile",
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})
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if err != nil {
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return nil, err
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}
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if stat.Size() > 512*1024 {
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return nil, errors.Errorf("Dockerfile %s bigger than allowed max size", url)
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}
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dt, err := ref.ReadFile(ctx, gwclient.ReadRequest{
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Filename: "Dockerfile",
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})
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if err != nil {
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return nil, err
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}
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dir, err := os.MkdirTemp("", "buildx")
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if err != nil {
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return nil, err
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}
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if err := os.WriteFile(filepath.Join(dir, "Dockerfile"), dt, 0600); err != nil {
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return nil, err
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}
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out = dir
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return nil, nil
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}, ch)
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if err != nil {
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return "", err
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}
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return out, nil
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}
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