Docker Nginx-proxy and letsencrypt not working

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:

./test_start_ssl.sh MYDOMAIN
./test_start_ssl.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
MAIN_DOMAIN=portainer. MYDOMAIN.com
LETSENCRYPT_EMAIL=your_email@domain.com
PORTAINER_SSL_PATH=/path/to/your/certs
PORTAINER_SSL_CERTIFICATE=/certs/ MYDOMAIN.crt
PORTAINER_SSL_KEY=/certs/ MYDOMAIN.key

Then I try to visit all my domains and portainer domains always with different errors.

Can somebody point me in the right direction or suggest a tutorial?