Create Docker image

To develop a custom Docker image for OpenPanel, start by downloading Dockerfile for the nginx image:

git clone -n --depth=1 --filter=tree:0 \
https://github.com/stefanpejcic/OpenPanel/tree/main/docker/nginx
cd OpenPanel
git sparse-checkout set --no-cone docker/nginx
git checkout

Edit and/or add new files, then build the docker image.

Example Image: Ubuntu 22 Docker image optimized for WordPress: Nginx, MySQL 8, PHP 8.3, phpMyAdmin, WP-CLI.

FROM ubuntu:22.04

ENV TZ=UTC
ENV DEBIAN_FRONTEND=noninteractive

RUN apt-get update && \
    apt-get install -y software-properties-common && \
    add-apt-repository ppa:ondrej/php && \
    apt-get update && \
    apt-get install --no-install-recommends -y \
        screen \
        nginx \
        mysql-server \
        php8.2-fpm \
        php8.2-mysql \
        php8.2-curl \
        php8.2-gd \
        php8.2-mbstring \
        php8.2-xml \
        php8.2-xmlrpc \
        php8.2-soap \
        php8.2-intl \
        php8.2-zip \
        php8.2-bcmath \
        php8.2-calendar \
        php8.2-exif \
        php8.2-ftp \
        php8.2-ldap \
        php8.2-sockets \
        php8.2-sysvmsg \
        php8.2-sysvsem \
        php8.2-sysvshm \
        php8.2-tidy \
        php8.2-uuid \
        php8.2-opcache \
        php8.2-redis \
        php8.2-memcached \
        php8.2-imagick \
        curl \
        pwgen \
        zip \
        unzip \
        wget \
        cron \
        phpmyadmin \
        php-mbstring \
        apt-get clean && \
        apt-get autoremove -y && \
        rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*

########## MySQL ##########
COPY mysqld.cnf /etc/mysql/mysql.conf.d/
RUN chmod a+rwx /run/mysqld

########## PORTS ##########
EXPOSE 22 80 3306 7681 8080

########## NGINX ##########
RUN sed -i \
    -e 's/# server_names_hash_bucket_size 64;/server_names_hash_bucket_size 64;/' \
    -e 's/# worker_connections 768;/worker_connections 10000;/' \
    /etc/nginx/nginx.conf
    
########## PHPMYADMIN ##########
RUN sed -i \
    -e 's/^upload_max_filesize = .*/upload_max_filesize = 1024M/' \
    -e 's/^max_input_time = .*/max_input_time = 600/' \
    -e 's/^memory_limit = .*/memory_limit = -1/' \
    -e 's/^post_max_size = .*/post_max_size = 1024M/' \
    -e 's/^max_execution_time = .*/max_execution_time = 600/' \
    /etc/php/8.2/cli/php.ini

COPY config.inc.php /etc/phpmyadmin/
COPY pma.php /usr/share/phpmyadmin/pma.php

########## PHP-FPM ##########
# 8.3
RUN sed -i \
    -e 's/^upload_max_filesize = .*/upload_max_filesize = 1024M/' \
    -e 's/^max_input_time = .*/max_input_time = 600/' \
    -e 's/^memory_limit = .*/memory_limit = -1/' \
    -e 's/^post_max_size = .*/post_max_size = 1024M/' \
    -e 's/^max_execution_time = .*/max_execution_time = 600/' \
    -e 's/^opcache.enable= .*/opcache.enable=1/' \
    /etc/php/8.3/fpm/php.ini

########## WP-CLI ##########
RUN curl -O https://raw.githubusercontent.com/wp-cli/builds/gh-pages/phar/wp-cli.phar && \
    chmod +x wp-cli.phar && \
    mv wp-cli.phar /usr/local/bin/wp

########## cleanup ##########
RUN rm -rf /var/cache/apk/* /tmp/* /var/tmp/*

########## docker run entrypoint  ##########
COPY entrypoint.sh /etc/entrypoint.sh
RUN chmod +x /etc/entrypoint.sh
CMD ["/bin/sh", "-c", "/etc/entrypoint.sh ; tail -f /dev/null"]

After crafting the Dockerfile, the next step is to build the image from it, enabling its use for new plans and user accounts.

To build the image, navigate to the folder where the Dockerfile was modified and execute:

docker build . -t NAME_OF_IMAGE_HERE

This process can take up to 15 minutes, depending on the complexity of the stack, so running it in a screen session is advisable.

Should any errors arise during the build process, address the indicated issues and initiate the build process again.

Following a successful build, create a new hosting plan and set the newly built image for that plan.