huge refactor for the new datahub build/deploy CI/CD github actions workflow

.github/workflows/python-lint.yaml

@@ -0,0 +1,15 @@
+name: "python lint"
+on:
+  - pull_request
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install ruff
+        run: pip install ruff==0.6.9
+
+      - name: Lint python files
+        run: ruff check .

README.md

@@ -2,5 +2,61 @@
 
 Toolkit to deploy many z2jh based JupyterHubs
 
-[![CircleCI](https://circleci.com/gh/yuvipanda/hubploy.svg?style=svg)](https://circleci.com/gh/pangeo-data/pangeo-cloud-federation)
-[![Documentation Status](https://readthedocs.org/projects/hubploy/badge/?version=latest)](https://hubploy.readthedocs.io/en/latest/?badge=latest)
+Usage:
+
+```
+hubploy deploy <deployment> <chart> <environment>
+```
+
+Help text:
+
+```
+$ hubploy --help
+usage: hubploy [-h] [-d] [-D] [-v] {deploy} ...
+
+positional arguments:
+  {deploy}
+    deploy          Deploy a chart to the given environment.
+
+options:
+  -h, --help        show this help message and exit
+  -d, --debug       Enable tool debug output (not including helm debug).
+  -D, --helm-debug  Enable Helm debug output. This is not allowed to be used in a CI environment due to secrets being displayed in plain text, and the script will exit. To enable this option, set a local environment varible HUBPLOY_LOCAL_DEBUG=true
+  -v, --verbose     Enable verbose output.
+```
+
+Deploy help:
+
+```
+hubploy deploy --help
+usage: hubploy deploy [-h] [--namespace NAMESPACE] [--set SET] [--set-string SET_STRING] [--version VERSION] [--timeout TIMEOUT] [--force] [--atomic]
+                      [--cleanup-on-fail] [--dry-run] [--image-overrides IMAGE_OVERRIDES [IMAGE_OVERRIDES ...]]
+                      deployment chart {develop,staging,prod}
+
+positional arguments:
+  deployment            The name of the hub to deploy.
+  chart                 The path to the main hub chart.
+  {develop,staging,prod}
+                        The environment to deploy to.
+
+options:
+  -h, --help            show this help message and exit
+  --namespace NAMESPACE
+                        Helm option: the namespace to deploy to. If not specified, the namespace will be derived from the environment argument.
+  --set SET             Helm option: set values on the command line (can specify multiple or separate values with commas: key1=val1,key2=val2)
+  --set-string SET_STRING
+                        Helm option: set STRING values on the command line (can specify multiple or separate values with commas: key1=val1,key2=val2)
+  --version VERSION     Helm option: specify a version constraint for the chart version to use. This constraint can be a specific tag (e.g. 1.1.1) or it may reference a
+                        valid range (e.g. ^2.0.0). If this is not specified, the latest version is used.
+  --timeout TIMEOUT     Helm option: time in seconds to wait for any individual Kubernetes operation (like Jobs for hooks, etc). Defaults to 300 seconds.
+  --force               Helm option: force resource updates through a replacement strategy.
+  --atomic              Helm option: if set, upgrade process rolls back changes made in case of failed upgrade. The --wait flag will be set automatically if --atomic is
+                        used.
+  --cleanup-on-fail     Helm option: allow deletion of new resources created in this upgrade when upgrade fails.
+  --dry-run             Dry run the helm upgrade command. This also renders the chart to STDOUT. This is not allowed to be used in a CI environment due to secrets being
+                        displayed in plain text, and the script will exit. To enable this option, set a local environment varible HUBPLOY_LOCAL_DEBUG=true
+  --image-overrides IMAGE_OVERRIDES [IMAGE_OVERRIDES ...]
+                        Override one or more images and tags to deploy. Format is: <path_to_image1/image_name>:<tag1> <path_to_image2/image_name>:<tag2> ... IMPORTANT:
+                        The order of images passed in must match the order in which they appear in hubploy.yaml and separated by spaces without quotes. You must always
+                        specify a tag when overriding images.
+```