run as nginx user instead of root, plus don't open port 80.

[eatwithforks]

./entrypoint.sh

2020/05/01 22:41:20 [warn] 510#510: the "user" directive makes sense only if the master process runs with super-user privileges, ignored in /etc/nginx/nginx.conf:1
nginx: [warn] the "user" directive makes sense only if the master process runs with super-user privileges, ignored in /etc/nginx/nginx.conf:1
nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
2020/05/01 22:41:20 [emerg] 510#510: bind() to 0.0.0.0:80 failed (13: Permission denied)
nginx: [emerg] bind() to 0.0.0.0:80 failed (13: Permission denied)
nginx: configuration file /etc/nginx/nginx.conf test failed

@rpardini

[rpardini]

Will be handled via #39