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add support for oci-layout build-context

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Signed-off-by: Avi Deitcher <avi@deitcher.net>
This commit is contained in:
Avi Deitcher
2022-06-19 13:30:24 +03:00
parent 724cb29042
commit 02bae945c3
5 changed files with 79 additions and 10 deletions
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29
build/build.go
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@ -5,6 +5,7 @@ import (
"bytes"
"context"
"crypto/rand"
_ "crypto/sha256" // ensure digests can be computed
"encoding/hex"
"encoding/json"
"fmt"
@ -17,6 +18,8 @@ import (
"syscall"
"time"
"github.com/containerd/containerd/content"
"github.com/containerd/containerd/content/local"
"github.com/containerd/containerd/images"
"github.com/containerd/containerd/platforms"
"github.com/docker/buildx/driver"
@ -1333,6 +1336,32 @@ func LoadInputs(ctx context.Context, d driver.Driver, inp Inputs, pw progress.Wr
target.FrontendAttrs["context:"+k] = v.Path
continue
}
// handle OCI layout
if strings.HasPrefix(v.Path, "oci-layout://") {
pathAlone := strings.TrimPrefix(v.Path, "oci-layout://")
parts := strings.SplitN(pathAlone, "@", 2)
if len(parts) != 2 {
return nil, errors.Errorf("invalid oci-layout context %s, must be oci-layout:///path/to/layout@sha256:hash", v.Path)
}
localPath := parts[0]
dgst, err := digest.Parse(parts[1])
if err != nil {
return nil, errors.Wrapf(err, "invalid oci-layout context %s, does not have proper hash, must be oci-layout:///path/to/layout@sha256:hash", v.Path)
}
store, err := local.NewStore(localPath)
if err != nil {
return nil, errors.Wrapf(err, "invalid store at %s", localPath)
}
// now we can add it
if target.OCIStores == nil {
target.OCIStores = map[string]content.Store{}
}
target.OCIStores[k] = store
target.FrontendAttrs["context:"+k] = fmt.Sprintf("oci-layout:%s@%s", k, dgst.String())
continue
}
st, err := os.Stat(v.Path)
if err != nil {
return nil, errors.Wrapf(err, "failed to get build context %v", k)