feat: Add Docker support

Dockerfile

@@ -0,0 +1,63 @@
+# Use official PHP with Apache
+FROM php:8.2-apache
+
+# Install system dependencies and PHP extensions in one layer
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    git \
+    unzip \
+    libicu-dev \
+    inkscape \
+    fonts-dejavu-core \
+    curl \
+    && docker-php-ext-configure intl \
+    && docker-php-ext-install intl \
+    && apt-get clean \
+    && rm -rf /var/lib/apt/lists/*
+
+# Install Composer
+COPY --from=composer:2 /usr/bin/composer /usr/bin/composer
+
+# Set working directory
+WORKDIR /var/www/html
+
+# Copy composer files and install dependencies
+COPY composer.json composer.lock ./
+COPY src/ ./src/
+RUN composer install --no-dev --optimize-autoloader --no-scripts
+
+# Configure Apache to serve from src/ directory and pass environment variables
+RUN a2enmod rewrite headers && \
+    echo 'ServerTokens Prod\n\
+ServerSignature Off\n\
+PassEnv TOKEN\n\
+<VirtualHost *:80>\n\
+    ServerAdmin webmaster@localhost\n\
+    DocumentRoot /var/www/html/src\n\
+    <Directory /var/www/html/src>\n\
+        Options -Indexes\n\
+        AllowOverride None\n\
+        Require all granted\n\
+        Header always set Access-Control-Allow-Origin "*"\n\
+        Header always set Content-Type "image/svg+xml" "expr=%{REQUEST_URI} =~ m#\\.svg$#i"\n\
+        Header always set Content-Security-Policy "default-src 'none'; style-src 'unsafe-inline'; img-src data:;" "expr=%{REQUEST_URI} =~ m#\\.svg$#i"\n\
+        Header always set Referrer-Policy "no-referrer-when-downgrade"\n\
+        Header always set X-Content-Type-Options "nosniff"\n\
+    </Directory>\n\
+    ErrorLog ${APACHE_LOG_DIR}/error.log\n\
+    CustomLog ${APACHE_LOG_DIR}/access.log combined\n\
+</VirtualHost>' > /etc/apache2/sites-available/000-default.conf
+
+# Set secure permissions
+RUN chown -R www-data:www-data /var/www/html && \
+    find /var/www/html -type d -exec chmod 755 {} \; && \
+    find /var/www/html -type f -exec chmod 644 {} \;
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
+    CMD curl -f http://localhost/demo/ || exit 1
+
+# Expose port
+EXPOSE 80
+
+# Start Apache
+CMD ["apache2-foreground"]

README.md

@@ -253,6 +253,39 @@ Heroku is another great option for hosting the files. All features are supported
 
 You can transfer the files to any webserver using FTP or other means, then refer to [CONTRIBUTING.md](/CONTRIBUTING.md) for installation steps.
 
+### 🐳 Docker
+
+Docker is a great option for self-hosting with full control over your environment. All features are supported including PNG rendering with Inkscape. Expand the instructions below to learn how to deploy with Docker.
+
+<details>
+  <summary><b>Instructions for deploying with Docker</b></summary>
+
+### Step-by-step instructions for deploying with Docker
+
+1. Clone the repository:
+   ```bash
+   git clone https://github.com/DenverCoder1/github-readme-streak-stats.git
+   cd github-readme-streak-stats
+   ```
+
+2. Visit https://github.com/settings/tokens/new?description=GitHub%20Readme%20Streak%20Stats to create a new Personal Access Token (no scopes required)
+
+3. Scroll to the bottom and click "Generate token"
+
+4. Build the Docker image:
+   ```bash
+   docker build -t streak-stats .
+   ```
+
+5. Run the container with your GitHub token:
+   ```bash
+   docker run -d -p 8080:80 -e TOKEN=your_github_token_here streak-stats
+   ```
+
+6. Visit http://localhost:8080 to access your self-hosted instance
+
+</details>
+
 [hspace]: https://user-images.githubusercontent.com/20955511/136058102-b79570bc-4912-4369-b664-064a0ada8588.png
 [verceldeploy]: https://vercel.com/new/clone?repository-url=https%3A%2F%2Fgithub.com%2FDenverCoder1%2Fgithub-readme-streak-stats%2Ftree%2Fvercel&env=TOKEN&envDescription=GitHub%20Personal%20Access%20Token%20(no%20scopes%20required)&envLink=https%3A%2F%2Fgithub.com%2Fsettings%2Ftokens%2Fnew%3Fdescription%3DGitHub%2520Readme%2520Streak%2520Stats&project-name=streak-stats&repository-name=github-readme-streak-stats
 [herokudeploy]: https://heroku.com/deploy?template=https://github.com/DenverCoder1/github-readme-streak-stats/tree/main