Docker PHP NGINX

This docker image is designed to run PHP applications, with some specific configuration for Drupal 8.

Customizations

NGINX is configured dynamically by generating a `default.conf file.

envsubst '${PHP_HOST} ${PHP_PORT} ${NGINX_DEFAULT_SERVER_NAME} ${NGINX_DEFAULT_ROOT} ${DEFAULT_SERVER}' < /templates/default.conf > /etc/nginx/conf.d/default.conf

If you want customize the default configuration file, just override the file /templates/default.conf.

There is just one server configuration, which acts basically like a placeholder, you can customize it by mounting extra configurations under /etc/nginx/conf.d/fragments, the files are then parsed by substituting the env variables with the actual values.

Here you can find some reference documentation to fine tune Nginx:

• https://www.nginx.com/resources/wiki/start/topics/recipes/drupal/
• https://www.nginx.com/resources/wiki/start/topics/examples/phpfcgi/
• http://nginx.org/en/docs/http/server_names.html#optimization

Default server custom configurations fragments

# Rewrite main server fragments.
for filename in /etc/nginx/conf.d/fragments/*.conf; do
  if [ -e "${filename}" ] ; then
    cp ${filename} ${filename}.tmp
    envsubst '${PHP_HOST} ${PHP_PORT} ${NGINX_DEFAULT_SERVER_NAME} ${NGINX_DEFAULT_ROOT} ${NGINX_SUBFOLDER} ${NGINX_SUBFOLDER_ESCAPED} ${NGINX_OSB_BUCKET} ${NGINX_OSB_RESOLVER} ${DRUPAL_PUBLIC_FILES_PATH} ${NGINX_CACHE_CONTROL_HEADER}' < $filename.tmp > $filename
    rm ${filename}.tmp
  fi
done

Extra configurations

You can also mount extra configurations (eg: a new server configuration), by placing files to: /etc/nginx/conf.d/custom, as the default server fragments, also this file get parsed by the entrypoint to substitute the env files.

# Rewrite custom server fragments.
for filename in /etc/nginx/conf.d/custom/*.conf; do
  if [ -e "${filename}" ] ; then
    cp ${filename} ${filename}.tmp
    envsubst '${PHP_HOST} ${PHP_PORT} ${NGINX_DEFAULT_SERVER_NAME} ${NGINX_DEFAULT_ROOT} ${NGINX_SUBFOLDER} ${NGINX_SUBFOLDER_ESCAPED} ${NGINX_OSB_BUCKET} ${NGINX_OSB_RESOLVER} ${DRUPAL_PUBLIC_FILES_PATH} ${NGINX_CACHE_CONTROL_HEADER}' < $filename.tmp > $filename
    rm ${filename}.tmp
  fi
done

Env variables

The entrypoint file contains a list of environment variables that will be replaced in all nginx configuration files.

• PHP_HOST: the php host (default: php)
• PHP_PORT: the php port (default: 9000)
• NGINX_PHP_READ_TIMEOUT: the php timeout (default: 900)
• NGINX_DEFAULT_SERVER_NAME: the server name (default: _)
• NGINX_DEFAULT_ROOT: the server root (default: /var/www/html)
• NGINX_HTTPSREDIRECT: enable/disable https redirect (default: 0)
• NGINX_SUBFOLDER: include nginx configuration files from subfolders (default: 0)
• NGINX_SUBFOLDER_ESCAPED: (default: 0)
• NGINX_OSB_BUCKET: needed when using drupal+s3fs, contains the remote bucket url to proxy aggregated ccs/js relative urls
• NGINX_OSB_RESOLVER: needed when using drupal+s3fs, contains the host resolver that nginx uses to resolve the remote bucket url (default: 8.8.8.8)
• DRUPAL_PUBLIC_FILES_PATH: the path for Drupal's public files (default: sites/default/files)
• NGINX_CACHE_CONTROL_HEADER: caching policy for public files (default: public,max-age=3600)
• NGINX_GZIP_ENABLE: enable the gzip compression (default: 1)
• SITEMAP_URL: the absolute URL of the website sitemap that should be written on robots.txt file for SEO purposes (no default provided, the directive is added to the robots.txt only when the variable exists)