If you're considering a smaller container for a cafe shop, there are several options you can explore.  Here's a general outline of the process:

Determine your requirements: Start by defining your specific needs and for the cafe.  Consider factors such as the size of the space needed, number of customers to be accommodated, kitchen equipment and facilities required, seating arrangements, storage space, and any specific design elements you have in mind.

Choose the container size: Since you're looking for a smaller container shop, a 20-foot container might be a suitable option.  These containers are approximately 20 feet long, 8 feet wide, and 8 feet 6 inches tall.  You can also explore other smaller sizes such as a 10-foot or 15-foot container, depending on your space requirements and budget.

Design and layout: Work with an architect or designer to plan the interior layout and design of the container cafe.  Consider the flow of customers, placement of kitchen equipment, counter space, seating arrangements, and any distinctive features to make your cafe visually appealing and functional.

Modify the container: The next step is to modify the container to meet your cafe requirements.  This may involve cutting windows and doors, reinforcing the structure, adding insulation, electrical wiring, plumbing connections, and installing ventilation systems.  Hiring a professional contractor or a company specializing in container modifications is recommended to ensure a high-quality result.

Install necessary equipment: Once the modifications are completed, you can start installing the necessary equipment and fixtures for your cafe.  This may include commercial-grade kitchen appliances, refrigeration units, countertops, sinks, seating, lighting, and decor.

Ensure compliance: Make sure to comply with local regulations and obtain any necessary permits or licenses required to operate a food establishment.  Health and safety inspections, plumbing and electrical inspections, and fire safety requirements may need to be met.

Branding and aesthetics: Consider the branding and aesthetics of your cafe shop.  Create an inviting and unique atmosphere by incorporating your branding elements into the design, such as signage, colors, and decor.

Ongoing maintenance and operations: Once your cafe is up and running, establish a maintenance plan to regularly inspect and maintain the container, equipment, and facilities.  Additionally, manage the cafe operations, including staff, inventory, customer service, and marketing.

It's important to note that the customization and construction process may vary depending on local regulations, building codes, and the expertise of professionals in your area.  Consulting with local authorities, architects, and contractors who have experience in container modifications will help ensure a successful and compliant cafe project.