feat: Replace image rescan command's --local flag with the local type ContainerRegistry record

[jopemachine]

Partially fix #411, ref: #1097

This PR removes the existing image rescan code that uses the --local flag and instead uses a Local type container registry record to reuse existing code paths.

Test

Manually tested according to the following procedure.

1. Create a Dockerfile with the following content.
   (Copy-pasted from feat: Support scanning the local Docker daemon's image list #1097 (comment))

FROM python:3.11

# Install ipython kernelspec
RUN python3.11 -m pip install ipython ipykernel
RUN python3.11 -m ipykernel install --display-name "Python 3.11 on Backend.AI" && \
    cat /usr/local/share/jupyter/kernels/python3/kernel.json

LABEL ai.backend.kernelspec=1 \
      ai.backend.features="uid-match batch query" \
      ai.backend.base-distro="ubuntu18.04" \
      ai.backend.runtime-type="python" \
      ai.backend.runtime-path="/usr/local/bin/python3"

2. Build using docker build

docker build -t stable/bai-python:3.11 -f Dockerfile .

Note: We don't need to prepend index.docker.io/library to the image name through this patch.

3. Create a fixture for generating a row in a "local" type container registry.

./backend.ai mgr fixture populate ./fixtures/manager/example-container-registries-local.json

4. Rescan the image

Perform an image rescan.
Verify that the built bai-python image has been scanned correctly.

./backend.ai mgr image rescan local

5. Create a session through the scanned image

./backend.ai session create local/stable/bai-python:3.11

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Checklist: (if applicable)

• Milestone metadata specifying the target backport version
• Mention to the original issue

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📚 Documentation preview 📚: https://sorna--2665.org.readthedocs.build/en/2665/

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📚 Documentation preview 📚: https://sorna-ko--2665.org.readthedocs.build/ko/2665/

[jopemachine]

• feat: Allow empty image name #2831
• feat: Replace image rescan command's --local flag with the local type ContainerRegistry record #2665 👈
• feat: Support AWS ECR Private Container Registry based on PostgreSQL #2624
• feat: Support AWS ECR Public Container Registry based on PostgreSQL #2623
• feat: Support GitLab Container Registry based on PostgreSQL #2622
• feat: Support GitHub Container Registry based on PostgreSQL #2621
• feat: Support docker image manifest v2 schema1 scanning #2815
• refactor: Base ContainerRegistry's scan_tag and implement MEDIA_TYPE_DOCKER_MANIFEST type handling #2620
• feat: Implement ID based client workflow to ContainerRegistry graphql API #2615
• feat: Add project column to the images table and refactor ImageRef related logics #2707
• feat: Migrate container registry config storage from Etcd to PostgreSQL #1917
• main

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[kyujin-cho]

Merge activity

• Sep 30, 11:57 AM EDT: Graphite rebased this pull request after merging its parent, because this pull request is set to merge when ready.