Apache2 RewriteRule not working in a container of image docker.io/library/php:7.4-apache

Main problem:

http://localhost/mysite/source/aphpfile.php works.

http://localhost/mysite/aphpfile does not work despite a rewrite rule to run aphpfile.php.

I tried with the server placed in containers run from php:7.2-apache and php:7.4-apache container images from docker.io/library/. I had the same problem in both. When I try locally, the RewriteRule works perfectly. I want it to work in a container.

Folder structure on the disk (inside container):

/var/www/html/mysite/source/aphpfile.php

No .htaccess files included.

Configuration:

1. Unmodified /etc/apache2/apache.conf file.
2. a2enmod rewrite
3. a2ensite mysite.conf
4. a2enmod info

With http://localhost/server-info loading correct configuration is confirmed:

Current Configuration: (from server-info page)
In file: /etc/apache2/sites-enabled/mysite.conf
   1: <Directory "var/www/html/mysite/">
   7:   RewriteEngine On
   9:   RewriteCond %{REQUEST_FILENAME} !-d
  10:   RewriteCond %{REQUEST_FILENAME} !-f
  11:   RewriteRule ^aphpfile /var/www/html/mysite/source/aphpfile.php [L]
    : </Directory>

Also the file /etc/apache2/sites-enabled/mysite.conf:

<Directory  "var/www/html/mysite/">
   Options +Indexes
   AllowOverride All
   Order allow,deny
   Allow from all
   Require all granted
        RewriteEngine On
        RewriteCond %{REQUEST_FILENAME} !-d
        RewriteCond %{REQUEST_FILENAME} !-f
        RewriteRule ^aphpfile /var/www/html/mysite/source/aphpfile.php [L] # <---- this line works in non-container server despite starting with /var/...
        #to be sure, I tried also with ^/aphpfile ^mysite/aphpfile
        # ^/mysite/aphpfile in additional lines seperately to point
        # to /var/www/html/mysite/source/aphpfile.php [L]
        # edit1, include exact lines I tried
        # RewriteRule ^aphpfile /var/www/html/mysite/source/aphpfile.php [L] # <---- this line works in non-container server despite starting with /var/...
        # RewriteRule ^aphpfile source/aphpfile.php [L] # <---- this I tried today after comment from @Daniel Farrell but no change in the result
        # RewriteRule ^/aphpfile /var/www/html/mysite/source/aphpfile.php [L]
        # RewriteRule ^source/aphpfile /var/www/html/mysite/source/aphpfile.php [L]
        # RewriteRule ^/aphpfile /var/www/html/mysite/source/aphpfile.php [L]
</Directory>

Logs:

1. /var/log/apache2/access.log:

127.0.0.1 - - [31/Oct/2020:14:01:36 +0000] "GET /mysite/aphpfile HTTP/1.1" 404 490 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.111 Safari/537.36"

2. /var/log/apache2/error.log: shows no error related this particular request.

Extra details:

1. Using podman (not docker)
2. podman exec -it <containername> bash to access/modify a container.
3. Took care of restarting apache2 service, verifying site and mod are enabled.

edit2

Not a solution to the problem but I'm moving on with alternative:

This way all functionality along with rewrite rule works.

Created new image:

#Dockerfile
FROM debian:buster-slim
RUN apt update -y \
 && apt install -y apache2 php php-<many extensions> \
 && apt clean all
#COPY <source> <dest>
#RUN <a2enmod, a2ensite>
CMD apachectl -D FOREGROUND

Still don't know why the official php:7.x-apache images are not working. (Bug?)