feat(docker): add MongoDB and improve setup instructions (#82)

* feat(docker): add MongoDB and improve setup instructions

* fix: reduce docker image size and other minor improvements

* fix: reduce docker image size and other minor improvements

* docs: update README for correct env file naming

* feat(docker): add environment variables and enhance Docker instructions

* docs: update README structure and enhance installation instructions

* docs: update README to clarify requirements for Docker and non-Docker setups

* docs: update README to improve Docker instructions and formatting

* docs: update code blocks in README to use shell syntax highlighting

* docs: refine installation steps and environment variable instructions

* docs: enhance README formatting for Docker instructions

* docs: correct formatting for environment variable examples in README

* docs: enhance README with badges and improved formatting

* docs: improve Docker instructions and formatting in README

* docs: update README to use figure elements for image captions

* docs: update README to replace figure elements with markdown images

* docs: update README to use shell syntax highlighting for code blocks

* docs: fix typo in README for environment file renaming step

backend/config/.env.development.example

@@ -1,9 +1,6 @@
 # Either remove the .example from the end of this filename.
 # Or create a new file with the same name, but without the .example extension.
 
-# NOTE: If you are using docker, you should provide these env variables during the docker run command instead. 
-# But you can still use this file as a guide.
-
 # MongoDB URL: Connection string for your MongoDB database
 # example: mongodb://localhost:27017/mydrive
 MONGODB_URL=