imp: README first version

README.md

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 # 0k-odoo-upgrade
+
+## Installation
+
+- Clone the current repo
+
+## Configuration
+
+- Requires to have the 0k scripts installed on the computer: https://git.myceliandre.fr/Lokavaluto/dev-pack
+
+## Usage
+### Before migration
+
+- [ ] import the origin database to migrate on local computer
+- [ ] Uninstall all useless Odoo add-ons. Warning: do not uninstall add-ons for which the disappearance in the finale version is managed by Open Upgrade scrips.
+- [ ] Unsure all the add-ons are migrated in the final Odoo version
+- [ ] (optional) De-active all the website views
+
+### Local Migration process
+
+- [ ] launch the origin database `ORIGIN_DATABASE_NAME` with original version of Odoo, with odoo service `ORIGIN_SERVICE`
+- [ ] ensure you have a virgin database of the final version  already in your postgres service (`MODEL_FINAL_DATABASE_NAME`)
+- [ ] launch the following command:
+
+``` bash
+./upgrade.sh {ORIGIN_VERSION} {DESTINATION_VERSION} {PATH_TO_DATABASE_ZIP} {ORIGIN_SERVICE} {MODEL_FINAL_DATABASE_NAME}
+```
+
+ex: ./upgrade.sh 14 16 ../14.0/elabore_20241208-2.zip odoo14 ou16
+
+### Deploy migrated base
+
+- [ ] Retrieve the migrated database (vps odoo dump)
+- [ ] Copy the database on the concerned VPS
+- [ ] vps odoo restore
+
+
+## Manage the add-ons to uninstall
+
+The migration script will manage the uninstall of Odoo add-ons:
+- add-ons we want to uninstall, whatever the reasons
+- add-ons to uninstall because they do not exist in the final Odoo docker image
+
+At the beginning of the process, the script compare the list of add-ons installed in the origin database, and the list of add-ons available in the `MODEL_FINAL_DATABASE`.
+
+The whole list of add-ons to uninstall is displayed, and needs a confirmation before starting the migration.
+
+
+## Manage migration issues
+
+As the migration process is performed on a copy of the orginal database, the process can be restarted without limits.
+
+Some Odoo migration errors won't stop the migration process, then be attentive to the errors in the logs.