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

.env.example

@@ -2,7 +2,8 @@
 DOCKER=true
 
 # MongoDB URL: Connection string for your MongoDB database
-MONGODB_URL=mongodb://127.0.0.1:27017/mydrive
+# Note: if using the compose file provided, the connection string should be as follows:
+MONGODB_URL=mongodb://username:password@mongo:27017/mydrive?authSource=admin
 
 # Database Type: Choose between "fs" and "s3", this specifies where the files will be stored.
 # fs = Filesystem