Added Samba docker container to allow for easier deployment of smb service

[ranok]

Proposed changes

This PR adds a new Dockerfile for a container that runs Samba (and rsyslog) that shares a volume with the main opencanary container to share the /var/log/samba/audit.log. This allows for the opencanary container to alert/log on SMB accesses.

Things to note:

• This copies the contents of data/smb into the container's share (called myshare by default) at build time
• Samba uses the data/smb.conf as its configuration, allowing for the creation of other shares, or changing the permissions on the existing myshare
• To run this, you need to add the samba container name into the docker compose command, e.g.: docker compose up -d samba latest
• I also updated the comments to reflect the change from docker-compose to docker compose

Types of changes

• Bugfix (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)
• Documentation Update

Checklist

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• Lint and unit tests pass locally with my changes (if applicable)
• I have run pre-commit (pre-commit in the repo)
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)
• Linked to the relevant github issue or github discussion

[jayjb]

Don't we want 139 too?