Use official Miniforge image, remove redundant apt bootstrap step, and fix Python 3.13 environment pin compatibility

[Copilot]

Changes proposed in this pull request:

• Replaces manual Miniforge bootstrap in docker/dockerfiles/container_template/Dockerfile with the official prebuilt base image from quay.io/condaforge/miniforge3:26.1.1-3.
• Removes redundant bootstrap steps now covered by the Miniforge base image:
  • Removes install_miniforge3.sh copy/execute layers from the Dockerfile.
  • Removes apt_get_essential.sh copy/execute layer from the Dockerfile.
  • Deletes docker/scripts/apt_get_essential.sh.
• Preserves environment provisioning behavior via environment.yml:
  • mamba env update --name base --file environment.yml
  • conda clean --all --yes
• Updates package pinning in docker/scripts/environment.yml for Python 3.13 compatibility:
  • Bumps pandas from 2.2.2 to 2.2.3 to resolve the conda solver failure during container build.
• Adds focused regression coverage in tests/test_container_template.py to assert the Dockerfile uses the expected Miniforge base image and keeps the environment.yml-based env update directive.

FROM quay.io/condaforge/miniforge3:26.1.1-3

WORKDIR /tmp
COPY /scripts/environment.yml .
RUN mamba env update --name base --file environment.yml && \
    conda clean --all --yes && \
    rm -rf /tmp/*

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• I've read and followed all steps in the Making a pull request
  section of the CONTRIBUTING docs.
• I've updated or added any relevant docstrings following the syntax described in the
  Writing docstrings section of the CONTRIBUTING docs.
• If this PR fixes a bug, I've added a test that will fail without my fix.
• If this PR adds a new feature, I've added tests that sufficiently cover my new functionality.

[espenhgn]

@copilot remove the step using the apt_get_essential.sh script, and the script itself.

[Copilot]

Done in 729242a: removed the apt_get_essential.sh step from docker/dockerfiles/container_template/Dockerfile and deleted docker/scripts/apt_get_essential.sh.

[espenhgn]

@copilot update version pins in environment.yml file to versions compatible with Python=3.13, fixing failing build:

#6 [4/5] RUN mamba env update --name base --file environment.yml &&     conda clean --all --yes &&     rm -rf /tmp/*
#6 11.77 
#6 11.77 Pinned packages:
#6 11.77 
#6 11.77   - python=3.13
#6 11.77 
#6 13.53 error    libmamba Could not solve for environment specs
#6 13.53     The following packages are incompatible
#6 13.53     ├─ pandas =2.2.2 * is installable with the potential options
#6 13.53     │  ├─ pandas 2.2.2 would require
#6 13.53     │  │  └─ python >=3.10,<3.11.0a0 *, which can be installed;
#6 13.53     │  ├─ pandas 2.2.2 would require
#6 13.53     │  │  └─ python >=3.11,<3.12.0a0 *, which can be installed;
#6 13.53     │  ├─ pandas 2.2.2 would require
#6 13.53     │  │  └─ python >=3.12,<3.13.0a0 *, which can be installed;
#6 13.53     │  └─ pandas 2.2.2 would require
#6 13.53     │     └─ python >=3.9,<3.10.0a0 *, which can be installed;
#6 13.53     └─ pin on python =3.13 * is not installable because it requires
#6 13.53        └─ python =3.13 *, which conflicts with any installable versions previously reported.
#6 13.55 critical libmamba Could not solve for environment specs
#6 ERROR: process "/bin/sh -c mamba env update --name base --file environment.yml &&     conda clean --all --yes &&     rm -rf /tmp/*" did not complete successfully: exit code: 1
------
 > [4/5] RUN mamba env update --name base --file environment.yml &&     conda clean --all --yes &&     rm -rf /tmp/*:
13.53     │  │  └─ python >=3.10,<3.11.0a0 *, which can be installed;
13.53     │  ├─ pandas 2.2.2 would require
13.53     │  │  └─ python >=3.11,<3.12.0a0 *, which can be installed;
13.53     │  ├─ pandas 2.2.2 would require
13.53     │  │  └─ python >=3.12,<3.13.0a0 *, which can be installed;
13.53     │  └─ pandas 2.2.2 would require
13.53     │     └─ python >=3.9,<3.10.0a0 *, which can be installed;
13.53     └─ pin on python =3.13 * is not installable because it requires
13.53        └─ python =3.13 *, which conflicts with any installable versions previously reported.
13.55 critical libmamba Could not solve for environment specs
------

[Copilot]

Fixed in 6905637: updated /docker/scripts/environment.yml pin from pandas=2.2.2 to pandas=2.2.3, which is compatible with python=3.13 and resolves the CI solver failure you reported.

[Copilot]

Just as a heads up, I was blocked by some firewall rules while working on your feedback. Expand below for details.

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• prefix.dev
  • Triggering command: /opt/conda/bin/mamba mamba env update --name base --file environment.yml (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)