Docker: соединение было сброшено с помощью Apache

Question

У меня есть проект Symfony 5 и файл docker -compose.yml в root этого проекта для создания контейнера Apache. docker -compose.yml успешно развернут, но когда я пытаюсь получить доступ к http://localhost, у меня возникает ошибка HTTP на пустой странице:

Вот мой vhost:

<VirtualHost *:80>
    DocumentRoot "/var/www/html/public"

    ServerName localhost

    <Directory "/var/www/html/public">
        AllowOverride all
    </Directory>
</VirtualHost>

docker -compose.yml:

version: "3"

services:
    webserver:
        build:
            context: ./.docker/bin/webserver
        container_name: '7.4.x-webserver'
        restart: 'always'
        ports:
            - "${HOST_MACHINE_UNSECURE_HOST_PORT}:80"
            - "${HOST_MACHINE_SECURE_HOST_PORT}:443"
        links:
            - mysql
        volumes:
            - "${DOCUMENT_ROOT}:/var/www/html"
            - "${PHP_INI}:/usr/local/etc/php/php.ini"
            - "${VHOSTS_DIR}:/etc/apache2/sites-enabled"
            - "${APACHE_LOG_DIR}:/var/log/apache2"

    mysql:
        build:
            context: "./.docker/bin/${DATABASE}"
        container_name: 'mysql'
        restart: 'always'
        ports:
            - "${HOST_MACHINE_MYSQL_PORT}:3306"
        volumes:
            - "${MYSQL_DATA_DIR}:/var/lib/mysql"
            - "${MYSQL_LOG_DIR}:/var/log/mysql"
        environment:
            MYSQL_ROOT_PASSWORD: ${MYSQL_ROOT_PASSWORD}
            MYSQL_DATABASE: ${MYSQL_DATABASE}
            MYSQL_USER: ${MYSQL_USER}
            MYSQL_PASSWORD: ${MYSQL_PASSWORD}

    phpmyadmin:
        image: phpmyadmin/phpmyadmin
        container_name: 'sc-phpmyadmin'
        links:
            - mysql
        environment:
            PMA_HOST: mysql
            PMA_PORT: 3306
            PMA_USER: ${MYSQL_USER}
            PMA_PASSWORD: ${MYSQL_PASSWORD}
            MYSQL_ROOT_PASSWORD: ${MYSQL_ROOT_PASSWORD}
            MYSQL_USER: ${MYSQL_USER}
            MYSQL_PASSWORD: ${MYSQL_PASSWORD}
        ports:
            - '${HOST_MACHINE_PHPMYADMIN_PORT}:80'
        volumes:
            - ./.docker/sessions

    redis:
        container_name: 'sc-redis'
        image: redis:latest
        ports:
            - "${HOST_MACHINE_REDIS_PORT}:6379"

.env:

###>  docker ###
DOCUMENT_ROOT=./

VHOSTS_DIR=./.docker/config/vhosts
APACHE_LOG_DIR=./.docker/logs/apache2
PHP_INI=./.docker/config/php/php.ini

DATABASE=mysql8

MYSQL_DATA_DIR=./.docker/data/mysql
MYSQL_LOG_DIR=./.docker/logs/mysql

HOST_MACHINE_UNSECURE_HOST_PORT=80
HOST_MACHINE_SECURE_HOST_PORT=443
HOST_MACHINE_MYSQL_PORT=3306
HOST_MACHINE_PHPMYADMIN_PORT=8080
HOST_MACHINE_REDIS_PORT=6379

MYSQL_ROOT_PASSWORD=tiger
MYSQL_USER=docker
MYSQL_PASSWORD=docker
MYSQL_DATABASE=docker
###>  docker ###

Dockerfile для Apache:

FROM php:7.4.1-apache-buster

# Surpresses debconf complaints of trying to install apt packages interactively
# https://github.com/moby/moby/issues/4032#issuecomment-192327844

ARG DEBIAN_FRONTEND=noninteractive

# Update
RUN apt-get -y update --fix-missing && \
    apt-get upgrade -y && \
    apt-get --no-install-recommends install -y apt-utils && \
    rm -rf /var/lib/apt/lists/*


# Install useful tools and install important libaries
RUN apt-get -y update && \
    apt-get -y --no-install-recommends install nano wget \
dialog \
libsqlite3-dev \
libsqlite3-0 && \
    apt-get -y --no-install-recommends install default-mysql-client \
zlib1g-dev \
libzip-dev \
libicu-dev && \
    apt-get -y --no-install-recommends install --fix-missing apt-utils \
build-essential \
git \
curl \
libonig-dev && \ 
    apt-get -y --no-install-recommends install --fix-missing libcurl4 \
libcurl4-openssl-dev \
zip \
openssl && \
    rm -rf /var/lib/apt/lists/* && \
    curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer

# Install xdebug
RUN pecl install xdebug-2.8.0 && \
    docker-php-ext-enable xdebug

# Install redis
RUN pecl install redis-5.1.1 && \
    docker-php-ext-enable redis

# Other PHP7 Extensions

RUN docker-php-ext-install pdo_mysql && \
    docker-php-ext-install pdo_sqlite && \
    docker-php-ext-install mysqli && \
    docker-php-ext-install curl && \
    docker-php-ext-install tokenizer && \
    docker-php-ext-install json && \
    docker-php-ext-install zip && \
    docker-php-ext-install -j$(nproc) intl && \
    docker-php-ext-install mbstring && \
    docker-php-ext-install gettext

# Install Freetype 
RUN apt-get -y update && \
    apt-get --no-install-recommends install -y libfreetype6-dev \
libjpeg62-turbo-dev \
libpng-dev && \
    rm -rf /var/lib/apt/lists/* && \
    docker-php-ext-configure gd

# Enable apache modules
RUN a2enmod rewrite headers

# Cleanup
RUN rm -rf /usr/src/*

Почему у меня возникла эта ошибка, пожалуйста?