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build: use strconv.ParseBool to parse DOCKER_BUILDKIT to allow value "0" 

Signed-off-by: Tibor Vass <tibor@docker.com>
(cherry picked from commit 721000e6c9)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This commit is contained in:
Tibor Vass 2018-07-03 23:14:06 +00:00 committed by Sebastiaan van Stijn
parent 0627568d60
commit 359d5c8a76
No known key found for this signature in database
GPG Key ID: 76698F39D527CE8C
1 changed files with 9 additions and 2 deletions
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9
cli/command/image/build.go
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@ -13,6 +13,7 @@ import (
"path/filepath"
"regexp"
"runtime"
"strconv"
"strings"
"github.com/docker/cli/cli"
@ -176,9 +177,15 @@ func (out *lastProgressOutput) WriteProgress(prog progress.Progress) error {
// nolint: gocyclo
func runBuild(dockerCli command.Cli, options buildOptions) error {
if os.Getenv("DOCKER_BUILDKIT") != "" {
if buildkitEnv := os.Getenv("DOCKER_BUILDKIT"); buildkitEnv != "" {
enableBuildkit, err := strconv.ParseBool(buildkitEnv)
if err != nil {
return errors.Wrap(err, "DOCKER_BUILDKIT environment variable expects boolean value")
}
if enableBuildkit {
return runBuildBuildKit(dockerCli, options)
}
}
var (
buildCtx io.ReadCloser