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Handle empty DOCKER_BUILDKIT like unset 

This fixes the cli erroring out if the variable is set to an empty
value.

```
$ export DOCKER_BUILDKIT=
$ docker version
DOCKER_BUILDKIT environment variable expects boolean value: strconv.ParseBool: parsing "": invalid syntax
```

Signed-off-by: Paweł Gronowski <pawel.gronowski@docker.com>
(cherry picked from commit ff7f76af7a)
Signed-off-by: Paweł Gronowski <pawel.gronowski@docker.com>
This commit is contained in:
Paweł Gronowski 2023-04-19 14:06:01 +02:00
parent f480fb1e37
commit c648e0b065
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GPG Key ID: B85EFCFE26DEF92A
2 changed files with 5 additions and 5 deletions
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4
cli/command/cli.go
View File

@ -164,8 +164,8 @@ func (cli *DockerCli) ContentTrustEnabled() bool {
// BuildKitEnabled returns buildkit is enabled or not. // BuildKitEnabled returns buildkit is enabled or not.
func (cli *DockerCli) BuildKitEnabled() (bool, error) { func (cli *DockerCli) BuildKitEnabled() (bool, error) {
// use DOCKER_BUILDKIT env var value if set // use DOCKER_BUILDKIT env var value if set and not empty
if v, ok := os.LookupEnv("DOCKER_BUILDKIT"); ok { if v := os.Getenv("DOCKER_BUILDKIT"); v != "" {
enabled, err := strconv.ParseBool(v) enabled, err := strconv.ParseBool(v)
if err != nil { if err != nil {
return false, errors.Wrap(err, "DOCKER_BUILDKIT environment variable expects boolean value") return false, errors.Wrap(err, "DOCKER_BUILDKIT environment variable expects boolean value")

6
cmd/docker/builder.go
View File

@ -44,9 +44,9 @@ func processBuilder(dockerCli command.Cli, cmd *cobra.Command, args, osargs []st
var buildKitDisabled, useBuilder, useAlias bool var buildKitDisabled, useBuilder, useAlias bool
var envs []string var envs []string
// check DOCKER_BUILDKIT env var is present and // check DOCKER_BUILDKIT env var is not empty
// if not assume we want to use the builder component // if it is assume we want to use the builder component
if v, ok := os.LookupEnv("DOCKER_BUILDKIT"); ok { if v := os.Getenv("DOCKER_BUILDKIT"); v != "" {
enabled, err := strconv.ParseBool(v) enabled, err := strconv.ParseBool(v)
if err != nil { if err != nil {
return args, osargs, nil, errors.Wrap(err, "DOCKER_BUILDKIT environment variable expects boolean value") return args, osargs, nil, errors.Wrap(err, "DOCKER_BUILDKIT environment variable expects boolean value")