For certain cases we need to build with `--provenance=false`.
However not all build envs (especially in the OSS ethos) have the latest
buildx so just blanket setting `--provenance=false` will fail in these
cases.
Having an env var allows people to set the value without having to worry
about if the buildx version has the `--provenance` flag.
Signed-off-by: Brian Goff <cpuguy83@gmail.com>
We should avoid erroring with attestations support compatability errors
when a user has specified --provenance=false.
A user may wish to enable --provenance=false that works across buildkit
versions, but currently it will fail on old versions - this patch fixes
this, to silently ignore the provenance flag for this check if it's set
to disabled.
Signed-off-by: Justin Chadwell <me@jedevc.com>
Using the syncronization primitive, we can avoid needing to create a
separate wait group.
This allows us to sidestep the issue where the wait group could be
completed, but the build invocation functions had not terminated - if
one of the functions was to terminate with an error, then it was
possible to encounter a race condition, where the result handling code
would begin executing, despite an error.
The refactor to use a separate error group which more elegantly handles
the concept of function returns and errors, ensures that we can't
encounter this issue.
Signed-off-by: Justin Chadwell <me@jedevc.com>
All build options should be passed everywhere - the frontend and the
backend of buildkit should both be able to see all attestations, as well
as all other opts: e.g. epoch settings, and no-cache.
Signed-off-by: Justin Chadwell <me@jedevc.com>
We allow any valid image reference format for the oci-layout, not just
limiting to name@digest, we additionally allow images of the form
name:tag@digest now.
The name of the reference is used to find the local directory to lookup
the store in, while the tag and digest are attached to a random identity
to generate the dummy reference sent to the oci-layout context.
This separation of the target to replace and the value to replace it
with ensures that any tag or digest set in the client is properly sent
across to the server. The tag is used when a digest was not specified,
and it is resolved in the context of the local directory before being
sent, using the same helpers as we use for the local cache expoter.
Signed-off-by: Justin Chadwell <me@jedevc.com>
This looks like an oversight, all of the other options have similar
checks. This can interfere with generated provenance where "add-hosts"
will be marked as an argument to the build, even though it's not
actually being utilized.
Signed-off-by: Justin Chadwell <me@jedevc.com>
If user does not specify image certain container parameters, we can load
them from the exporter metadata.
Additionally, we introduce a new "default" value for the --invoke flag,
that keeps all of the default parameters (since cobra does not have an
easy way of accepting an optional flag argument).
Signed-off-by: Justin Chadwell <me@jedevc.com>
Print flag can be used to make additional information
requests about the build and print their results.
Currently Dockerfile supports: outline, targets, subrequests.describe
Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
Justin Chadwell