[ADD] doc: Migration docker postgresql

Makefile

@@ -369,6 +369,10 @@ docker_stop:
 .PHONY: docker_restart_daemon
 docker_restart_daemon: docker_stop docker_run_daemon
 
+.PHONY: docker_show_databases
+docker_show_databases:
+	./script/docker/docker_list_database.sh
+
 .PHONY: docker_show_logs_live
 docker_show_logs_live:
 	docker-compose logs -f

doc/MIGRATION.md

@@ -0,0 +1,38 @@
+# Migration
+
+Guide to help migration with different version.
+
+## Docker
+
+- Clone project if only download docker-compose
+    - `git init`
+    - `git remote add origin https://github.com/erplibre/erplibre`
+    - `git fetch`
+    - `mv ./docker-compose.yml /tmp/temp_docker-compose.yml`
+    - `git checkout master`
+    - `mv /tmp/temp_docker-compose.yml ./docker-compose.yml`
+- Do manually a backup of ERPLibre database (TODO implement makefile command)
+- Update `./docker-compose.yml` depending of difference with git.
+- Run script `make docker_exec_erplibre_gen_config`
+- Stop the docker `make docker_stop`
+- Delete the volume, `docker volume rm ${BASENAME}_erplibre-db-data`
+- Start the docker `make docker_run_daemon`
+- Restore the backup manually.
+
+### Database migration, PostgreSQL update 11 to 12
+
+TODO not working automatically, check last procedure and do it manually. The command to the docker is missing support when database is external.
+
+Easy way, do a backup with ERPLibre, upgrade Postgresql, restore the same backup.
+
+List all database :
+
+```bash
+make docker_show_databases
+```
+
+## Vanilla
+
+- Run script `make install_dev`
+- Restart your daemon
+- Regenerate master password manually

script/docker/docker_list_database.sh

@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+
+CURRENT=$(pwd)
+BASENAME=$(basename "${CURRENT}")
+
+docker exec -u root -ti ${BASENAME}_ERPLibre_1 /bin/bash -c "\
+cd /ERPLibre; \
+time make db_list; \
+"