WIP: Update nexus, add pypi

[manics]

• Reset the admin password on new installations (default in the current upstream Docker image is a random string)
• Use nexus-cli to create repositories. This should also allow cleanup-policies to be configured for new repositories (it won't modify the policy on existing ones, nor will it modify an existing policy with the same name).

$ docker-compose build nexus
$ docker-compose up nexus

When Nexus displays the Started Sonatype Nexus OSS 3.19.1-01 message

docker-compose exec nexus /initialise-repos.py

This will update the admin password and stop nexus only if necessary, otherwise it'll create repositories only if they don't exist.
If nexus was stopped restart it and rerun the script.

/initialise-repos.py won't modify existing objects so it's safe to always run.

---

To push to the repo inside devspace (https://help.sonatype.com/repomanager3/formats/pypi-repositories#PyPIRepositories-ConfiguringPyPIClientTools):

# cat << EOF > ~/.pypirc
[distutils]
index-servers =
    pypi

[pypi]
repository: http://nexus:8081/nexus/repository/pypi-internal/
username: admin
password: admin123
EOF

# git clone https://github.com/ome/omego
# cd omego
# python setup.py sdist bdist_wheel
# twine upload dist/*
Uploading distributions to http://nexus:8081/nexus/repository/pypi-internal/
Uploading omego-0.7.1.dev0-py3-none-any.whl
100%|███████████████████████████████████████| 40.1k/40.1k [00:00<00:00, 135kB/s]
Uploading omego-0.7.1.dev0.tar.gz
100%|███████████████████████████████████████| 36.1k/36.1k [00:00<00:00, 315kB/s]

To install from the repo inside devspace:

# pip install --trusted-host nexus --extra-index-url http://nexus:8081/nexus/repository/pypi-internal/simple omego==0.7.1.dev0
Looking in indexes: https://pypi.org/simple, http://nexus:8081/nexus/repository/pypi-internal/simple
Collecting omego==0.7.1.dev0
  Downloading http://nexus:8081/nexus/repository/pypi-internal/packages/omego/0.7.1.dev0/omego-0.7.1.dev0-py3-none-any.whl
Collecting yaclifw>=0.1.1
  Downloading https://files.pythonhosted.org/packages/48/58/f6ae8938d8726f9ba91a5245a02413953a62ce09aae01345b0ef189925b1/yaclifw-0.2.0.tar.gz
Requirement already satisfied: future in /usr/local/lib/python3.8/site-packages (from omego==0.7.1.dev0) (0.18.2)
Requirement already satisfied: six in /usr/local/lib/python3.8/site-packages (from yaclifw>=0.1.1->omego==0.7.1.dev0) (1.13.0)
Building wheels for collected packages: yaclifw
  Building wheel for yaclifw (setup.py) ... done
  Created wheel for yaclifw: filename=yaclifw-0.2.0-cp38-none-any.whl size=14608 sha256=2e950141514df47b758bf2e57ff73f4e8b1a46830ab8b0215e8ef846a357e7f5
  Stored in directory: /root/.cache/pip/wheels/b4/61/a3/30d948e563cffa78d54a7c9d1d97e69342d28499e116f2b587
Successfully built yaclifw
Installing collected packages: yaclifw, omego
Successfully installed omego-0.7.1.dev0 yaclifw-0.2.0

--trusted-host nexus is needed inside devspace because it's using a http connection. You could also pass --index-url if you want to disable the default pypi.

[manics]

Last todo:

• Take Nexus context into account in REST calls thiagofigueiro/nexus3-cli#83

[manics]

Todo: three repositories following https://help.sonatype.com/repomanager3/formats/pypi-repositories#PyPIRepositories-ProxyingPyPIRepositories

• internal for custom CI builds
• proxy default pypi
• public group pypi that merges the aboe two repositories with the required precedence

[sbesson]

Closing as this is still WIP and conflicts but the feature proposed here are still useful for deploying a production deployment and this might something worth revisiting.