Bump docker/build-push-action from 2 to 3

Created by: dependabot[bot]

Bumps docker/build-push-action from 2 to 3.

Release notes

Sourced from docker/build-push-action's releases.

v3.0.0

• Node 16 as default runtime by @​crazy-max (#564)
  • This requires a minimum Actions Runner version of v2.285.0, which is by default available in GHES 3.4 or later.
• Standalone mode support by @​crazy-max (#601 #609)
• chore: update dev dependencies and workflow by @​crazy-max (#571)
• Bump @​actions/exec from 1.1.0 to 1.1.1 (#573)
• Bump @​actions/github from 5.0.0 to 5.0.1 (#582)
• Bump minimist from 1.2.5 to 1.2.6 (#584)
• Bump semver from 7.3.5 to 7.3.7 (#595)
• Bump csv-parse from 4.16.3 to 5.0.4 (#533)

Full Changelog: https://github.com/docker/build-push-action/compare/v2.10.0...v3.0.0

v2.10.0

• Add imageid output and use metadata to set digest output (#569)
• Add build-contexts input (#563)
• Enhance outputs display (#559)

v2.9.0

• add-hosts input (#553 #555)
• Fix git context subdir example and improve README (#552)
• Add e2e tests for ACR (#548)
• Add description on github-token option to README (#544)
• Bump node-fetch from 2.6.1 to 2.6.7 (#549)

v2.8.0

• Allow specifying subdirectory with default git context (#531)
• Add cgroup-parent, shm-size, ulimit inputs (#501)
• Don't set outputs if empty or nil (#470)
• docs: example to sanitize tags with metadata-action (#476)
• docs: wrong syntax to sanitize repo slug (#475)
• docs: test before pushing your image (#455)
• readme: remove v1 section (#500)
• ci: virtual env file system info (#510)
• dev: update workflow (#499)
• Bump @​actions/core from 1.5.0 to 1.6.0 (#160)
• Bump ansi-regex from 5.0.0 to 5.0.1 (#469)
• Bump tmpl from 1.0.4 to 1.0.5 (#465)
• Bump csv-parse from 4.16.0 to 4.16.3 (#451 #459)

v2.7.0

• Add metadata output (#412)
• Bump @​actions/core from 1.4.0 to 1.5.0 (#439)
• Add note to sanitize tags (#426)
• Cache backend API docs (#406)
• Git context now supports subdir (#407)
• Bump codecov/codecov-action from 1 to 2 (#415)

v2.6.1

• Small typo and ensure trimmed output (#400)

... (truncated)

Commits

• c56af95 Merge pull request #704 from crazy-max/setOutput
• 75aaa63 Remove workaround for setOutput
• f97d6e2 Merge pull request #700 from crazy-max/update-docs
• 47c00d7 ci: secret job to check for invalid secrets
• 871b930 docs: update links and layout
• 105bf59 docs: copy between registries with buildx
• 48888e0 Merge pull request #699 from crazy-max/docs-outputs
• 6b820ad docs: note about multiple outputs
• e1a1035 Merge pull request #665 from baibaratsky/patch-1
• 0f5a7d4 docs: named contexts
• Additional commits viewable in compare view

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