v1.0.0-rc6

What's Changed

• test: update "previous" version to 1.0.0-rc5 by @rchincha in #484
• test: add a bom test for derived images by @rchincha in #483
• test: Mark the bom tests as slow. by @smoser in #488
• Fix/nightly ci by @smoser in #497
• fix: mount previously built squashfs layers if needed by @rchincha in #502
• ci: clean disk before run and show disk usage by @andaaron in #501
• fix: add an explicit 'userxattr' option for overlay by @rchincha in #504
• Doc/add some doc about make by @smoser in #498
• fix: use a version of umoci with fix for failing chmod by @hallyn in #505
• docs: add a "nightly" badge by @rchincha in #507
• feat: Better lint and test for devs and Makefile cleanup. by @smoser in #511
• chore: Move back to upstream for umoci import, go mod tidy by @smoser in #512
• fix: In Makefile, download zot as ZOT rather than regclient by @smoser in #513
• Cleanup/imports parsing by @smoser in #509
• chore: Clone images to local oci repo before building by @smoser in #518
• fix: Improve bind imports, support lower case 'source' in yaml, add go test by @smoser in #517
• build: bind BUILD_D in so you can use a BUILD_D outside of the tree. by @smoser in #520
• feat(check): add a check for symlinks in roots-dir path by @rchincha in #521
• Fix/mounting squashfs extract by @smoser in #514
• Document missing Ubuntu dependencies by @ariel-miculas in #526
• fix(gzip)!: change the default block size by @rchincha in #529
• fix: handle ancient empty docker layers by @rchincha in #522
• Fix/build deps by @raharper in #527
• docs: make type: oci description match code by @mikemccracken in #532
• feat: use squashfuse ready notifier if available by @ariel-miculas in #528

Full Changelog: v1.0.0-rc5...v1.0.0-rc6