added docker file

Dockerfile

@@ -0,0 +1,27 @@
+FROM alpine
+
+ENV \
+  APP_DIR="/app" \
+  APP_PORT="80"
+
+# the "app" directory (relative to Dockerfile) containers your Laravel app...
+COPY app/ $APP_DIR
+
+RUN apk add --update \
+    curl \
+    php \
+    php-opcache \
+    php-openssl \
+    php-pdo \
+    php-json \
+    php-phar \
+    php-dom \
+    && rm -rf /var/cache/apk/*
+
+RUN curl -sS https://getcomposer.org/installer | php -- \
+  --install-dir=/usr/bin --filename=composer
+
+RUN cd $APP_DIR && composer install
+
+WORKDIR $APP_DIR
+CMD php artisan serve --host=0.0.0.0 --port=$APP_PORT