[20.10 backport] vendor: github.com/moby/buildkit v0.8.2

[thaJeztah]

Backport of #42056

full diff: moby/buildkit@68bb095...9065b18

• fix seccomp compatibility in 32bit arm buildkit#1955 / [v0.8 backport] fix seccomp compatibility in 32bit arm buildkit#1967 fix seccomp compatibility in 32bit arm
  • fixes Unable to build alpine:edge containers for armv7 buildkit#1946 Unable to build alpine:edge containers for armv7
  • fixes Buildx failing to build for arm/v7 platform on arm64 machine docker/buildx#511 Buildx failing to build for arm/v7 platform on arm64 machine
• resolver: avoid error caching on token fetch buildkit#1957 / [v0.8 backport] resolver: avoid error caching on token fetch buildkit#1969 resolver: avoid error caching on token fetch
  • fixes Error: i/o timeout should not be cached buildkit#1928 Error: i/o timeout should not be cached
• fileop: fix checksum to contain indexes of inputs buildkit#1965 / [v0.8 backport] fileop: fix checksum to contain indexes of inputs buildkit#1970 fileop: fix checksum to contain indexes of inputs
• frontend/dockerfile: add RunCommand.FlagsUsed field buildkit#1954 / [v0.8 backport] frontend/dockerfile: add RunCommand.FlagsUsed field buildkit#1971 frontend/dockerfile: add RunCommand.FlagsUsed field
  • relates to builder: produce error when using unsupported Dockerfile option #41912 "builder: produce error when using unsupported Dockerfile option"
  • relates to [20.10] Classic builder silently ignores unsupported Dockerfile command flags #41911 [20.10] Classic builder silently ignores unsupported Dockerfile command flags
• update qemu emulators buildkit#1953 / [v0.8 backport] update qemu emulators buildkit#1968 update qemu emulators
  • relates to Impossible to run git clone inside buildx with non x86 architecture docker/buildx#528 (comment) "Impossible to run git clone inside buildx with non x86 architecture"
• Fix reference count issues on typed errors with mount references buildkit#1963 / [v0.8 backport] Fix reference count issues on typed errors, docs: fix frontend image tags  buildkit#1990 Fix reference count issues on typed errors with mount references
  • fixes errors on releasing mounts with typed execerror refs buildkit#1958 errors on releasing mounts with typed execerror refs
  • fixes / addresses invalid mutable ref when using shared cache mounts docker/for-linux#1203 invalid mutable ref when using shared cache mounts
• dockerfile/docs: fix frontend image tags buildkit#1916 / [v0.8 backport] Fix reference count issues on typed errors, docs: fix frontend image tags  buildkit#1990 dockerfile/docs: fix frontend image tags
  • fixes Typos in frontend syntax documentation buildkit#1907
• git: set token only for main remote access buildkit#1987 / [v0.8 backport] git: set token only for main remote access buildkit#1991 git: set token only for main remote access
  • fixes Loading repositories with submodules is repeated. Failed to clone submodule from googlesource  docker/build-push-action#300 "Loading repositories with submodules is repeated. Failed to clone submodule from googlesource"
• Dockerfile: update runc to rc93 buildkit#1998 allow skipping empty layer detection on cache export
  • relates to moby-integration: 20.10 cache layer lost after many imports buildkit#1992 docker --cache-from with BUILDKIT_INLINE_CACHE does not work every second time buildkit#1981

Changes in moby:

• builder: fix incorrect cache match for inline cache with empty layers
  • fixes moby-integration: 20.10 cache layer lost after many imports buildkit#1992 docker --cache-from with BUILDKIT_INLINE_CACHE does not work every second time buildkit#1981

Signed-off-by: Sebastiaan van Stijn github@gone.nl
Signed-off-by: Tibor Vass tibor@docker.com