If the Dockerfile needs to run some command, that step fails unless
QEMU is set up properly first:
failed to solve: rpc error: code = Unknown desc = failed to load
LLB: runtime execution on platform linux/ppc64le not supported
Commit summary:
340e082 build.make: optional inclusion of Windows in multiarch images
5231f05 build.make: properly declare push-multiarch
4569f27 build.make: fix push-multiarch ambiguity
bd41690 cloud build: initial set of shared files
6f2322e Update patch release notes generation command
d8c76fe Support local snapshot RBAC for pull jobs
ea1f94a update release tools instructions
7edc146 Update snapshotter to version 2.0.1
3863a0f build for multiple platforms only in CI, add s390x
7c5a89c prow.sh: use 1.3.0 hostpath driver for testing
Most repos inherit the default BUILD_PLATFORMS, which includes
Windows, but don't have the necessary Dockerfile.Windows yet. To
simplify the rollout of multiarch image builds, Windows binary
building continues to be tested (i.e. BUILD_PLATFORMS remains
unchanged), but push-multiarch skips Windows if the Dockerfile.Windows
is missing.
"make push-multiarch" matched both push-multiarch and push-%. This
seems to be none-deterministic and in at least one
repo (external-provisioner), make picked the wildcard rule which then
failed because there is no "multiarch" command.
This ambiguity gets resolved by instantiating the wildcard rules only
for existing commands. The advantage also is that "make
push-no-such-command" will fail with an obvious "No rule to make
target 'push-no-such-command'" instead of attempting to build the
command.
The approach taken here extends the existing support for
cross-compiling binaries on the build host and specifying the Go
compiler: Go is installed if needed (as in Prow testing), binaries are
build on the host, then one image is created for each platform, and
finally those are combined into a single multi-architecture image.
Developers should not be forced to build for all platforms by
default. We also don't want to copy-and-paste the go invocation for
each new platform.
To address both, the target platform(s) are now configurable via
BUILD_PLATFORMS and additional platforms are only enabled in the Prow
CI.
For now this serves as a test that the source actually compiles for
multiple platforms. Building images for different target platforms is a
different problem.
The final 1.3.0 release of the hostpath driver really uses the 1.3.0
driver image in its deployment, in contrast to the previous -rc
candidates which still used 1.2.0.
