Multiple upgrades and a new feature:docker compose.

• Add warning about missing data.db in repo when doing first deploy via#136
• Add metadata for publishing course on Teclado
• Use Cloudinary for image hosting
• Fix text rendering in top banner via#139
• Update Python base image to bookworm via#142
• Use__name__ in blueprint definitions via#143
• Useemails/action.html instead ofemails/registration.html via#144
• Remove creating db when running app; instead doing it via db migrations, via#145
• Add missingItemSchema import on section 6 via#146
• Remove unnecessarycompare_type in Alembic config file via#147
• Add information on running app and database with Docker Compose via#147
• Fix JS dependencies for Docusaurus upgrade via#156
• Add optionalstore_id toItemUpdateSchema via#157
• Add missingos import in Flask-SQLAlchemy configuration lecture (S06 L04) via#158
• Remove unnecessaryversion key indocker-compose.yml files via#159
• Add info on running arbitrary commands in a Docker Compose container via#160