issue

letsencrypt running fine, featured image in posts are showing, but all images are broken, because they are all having a http link.

solution

( by the OP kevc1973, based on the post in : https://bit.ly/3Pmg2SE )

1. stop the service

sudo /opt/bitnami/ctlscript.sh stop

2. backup the config file

/bitnami/ghost/config.production.json

3. edit value of url the config file, replace http with https ;
   ( tried this before but resulted in some sort of localhost redirection, since i missed the followings );

4. enable protocol proxy pass in apache
   config file :

/opt/bitnami/apps/letsencrypt/conf/httpd-app.conf

insert this line at the top of the config file :

RequestHeader set X-Forwarded-Proto "https"

5. start the service

sudo /opt/bitnami/ctlscript.sh start

done ~