Update docs for SOR using Docker

[caike]

Summary

Add information on how to read and assign signing key and collateral for running the SOR using Docker.

Addresses part of Issue #60

Please mark the relevant option(s) for your pull request:

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Code refactoring (improving code quality without changing its behavior)
• Documentation update (adding or updating documentation related to the project)

Checklist

Please ensure that your pull request meets the following criteria:

• I have read the Contributing Guide
• My code follows the project's coding style and best practices
• My code is appropriately commented and includes relevant documentation
• I have added tests to cover my changes
• All new and existing tests pass
• I have updated the documentation, if necessary

[4TT1L4]

Please add a not about the fact that the --testnet-magic 1 must be removed for mainnet.

Otherwise it looks good.

[sourabhxyz]

Thanks a lot for your contribution @caike ! Maybe worth mentioning that this information can be conveniently obtained from explorer such as cexplorer.io.

[4TT1L4]

I would still prefer to add a note about mainnet or two commands: one for preprod and one for mainnet.

Actually.... the default config is for mainnet in other places. Maybe we should stick to mainnet here as well.

[caike]

Updated with these suggestions. However, the section of the README that shows how to create a wallet is using preprod:

cardano-cli address build \
    --payment-verification-key-file bot.vkey \
    --testnet-magic 1 \
    --out-file bot.preprod.addr

So maybe defaulting to --mainnet on the query command while using bot.preprod.addr as the address might be confusing. Thoughts ?

[adacapo21]

For me it seems ok after the update.

Requested changes incorporated.