Hi, I’m writing this out of frustration, after reading all available tutorials and docs, but apparently I’m missing something important.

I want to revamp my website [MYDOMAIN] using docker and create a static website, a POSTGRES container, and some Dockerized apps.
I started out registering MYDOMAIN on Digital Ocean Network section with www and without.
Then:
I cloned and started https://github.com/jwilder/nginx-proxy
I cloned https://github.com/evertramos/docker-compose-letsencrypt-nginx-proxy-companion
Create a .env with my Digital Ocean IP:

Set the IP address of the external access Interface

IP=0.0.0.0

After that if I run

./teststartssl.sh MYDOMAIN
./teststartssl.sh www.MYDOMAIN

And I get “it works” results then I run ./test_stop.sh

After that I registered a subdomain portainer.MYDOMAIN
I cloned https://github.com/evertramos/docker-portainer-letsencrypt
And updated the following parameters:
DOMAINS= MYDOMAIN.com,www. MYDOMAIN.com,portainer. MYDOMAIN.com
MAINDOMAIN=portainer. MYDOMAIN.com
LETSENCRYPTEMAIL=youremail@domain.com
PORTAINERSSLPATH=/path/to/your/certs
PORTAINERSSLCERTIFICATE=/certs/ MYDOMAIN.crt
PORTAINERSSL_KEY=/certs/ MYDOMAIN.key
Then I try to visit all my domain and portainer domain always with different errors
Can somebody point me in the right direction or suggest a tutorial?