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build: add opt-out from default load behavior

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Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
This commit is contained in:
Tonis Tiigi 2020-07-27 22:38:06 -07:00
parent 9e5321eab8
commit 3862ff269b
1 changed files with 3 additions and 1 deletions
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4
build/build.go
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@ -343,11 +343,13 @@ func toSolveOpt(d driver.Driver, multiDriver bool, opt Options, dl dockerLoadCal
IsDefaultMobyDriver()
})
noDefaultLoad, _ := strconv.ParseBool(os.Getenv("BUILDX_NO_DEFAULT_LOAD"))
switch len(opt.Exports) {
case 1:
// valid
case 0:
if isDefaultMobyDriver {
if isDefaultMobyDriver && !noDefaultLoad {
// backwards compat for docker driver only:
// this ensures the build results in a docker image.
opt.Exports = []client.ExportEntry{{Type: "image", Attrs: map[string]string{}}}