In my previous post, we setup a Mastodon server using Docker and nginx-proxy. In this post, we use instead the web server Caddy. I’ve only discovered Caddy a week ago. The configuration of Mastodon is now even simpler and shorter. Caddy redirects traffic automatically from HTTP to HTTPS and configures HTTPS for all domains via Let’s Encryption. 
Our starting point is the docker-compose.yml shipped with the Mastodon code. Why is it not enough? It assumes you setup up proxy with HTTPS endpoints yourself. So let’s integrate this as well in Docker.
I have been working on a setup with Mastodon that is easy to repeat and share. A setup with very few steps. Please consider that this setup is not enough for a production environment. It requires additional security measures. Please put your recommendations in the comments! 
Our starting point is the docker-compose.yml shipped with the Mastodon code. Why is it not enough? It assumes you setup up proxy with HTTPS endpoints yourself. So let’s integrate this as well in Docker.
Consider also the compact setup with the Caddy webserver.
The Titanic could accommodate about 2500 passengers who booked either first, second or third class. Wikipedia tells that
those travelling in first class, most of them the wealthiest passengers on board, included prominent members of the upper class, businessmen, politicians, high-ranking military personnel, industrialists, bankers, entertainers, socialites, and professional athletes. Second-class passengers were predominantly middle-class travellers and included professors, authors, clergymen, and tourists. Third-class or steerage passengers were primarily immigrants moving to the United States and Canada.
Much has changed since then.
I dedicate this text to Vincent and Sara. 
If we cannot share the experience, so let me share at least the story.
Prologue
Also in 2021, holiday plans fell victim to yet another Covid-19 wave. Eventually, I waited until mid December and booked in face of the next emerging Covid-19 variant Omicron the least adventures holidays of my adulthood: a week-long all-inclusive cruise in the Orient with every aspect handled in due care by a world-class global-scale tour operator.
For the sake of completeness, let me quickly recap the outbound connection to the destination. I got a Rail&Fly ticket to a nearby airport in Germany. The Airbus A380 to Dubai, a huge airplane with two floors, was approximately occupied 30%, maybe less. I use Atmosfair.de for CO2 compensation. Not sure who would need to pay for all those empty seats around me. The time difference between Germany and Dubai is 3 hours. I arrive after about 6 hours of flight and a short sleep of about 3 hours at 6 o’clock in the morning. On top of mandatory PCR tests to get on the flight, it seems that Dubai tests just again all tourists upon arrival. No need to wait for the result – it is delivered about 3 hours later to you via SMS. I wonder what happens in the case of a positive test. I didn’t find out as my test was fortunately negative. 😁
The tour operator takes care of the transfer to the cruise ship. They also handle all subsequent paper work to enter the destination countries, that means here the United Arabic Emirates (UAE) and Oman. For this purpose, they require all passengers to hand over their passports before getting on board of the ship. After some hesitation and some questioning, I resign and hand out my passport, too.
Once on board of the ship, I drop off my luggage, eat something and head out to explore Dubai on my own.
