Docker container version (#39)

* + Dockerfile and compose file
+ Scripts dir and startup script
+ Build image npm script

* * Moves env to file

* + Tags image with info from package.json
* Moves image creation to script
* Updates README

* Update README.md

Co-authored-by: Sebastien Castiel <sebastien@castiel.me>

---------

Co-authored-by: Maxime Jacob <mjacob-no-reply@proton.me>
Co-authored-by: Sebastien Castiel <sebastien@castiel.me>

container.env.example

@@ -0,0 +1,7 @@
+# db
+POSTGRES_PASSWORD=1234
+
+# app
+POSTGRES_PRISMA_URL=postgresql://postgres:${POSTGRES_PASSWORD}@db
+POSTGRES_URL_NON_POOLING=postgresql://postgres:${POSTGRES_PASSWORD}@db
+NEXT_PUBLIC_BASE_URL=http://localhost:3000