updates around README, .env, Dockerfile

docker/fpm/Dockerfile

@@ -1,12 +1,23 @@
 FROM php:8.2-fpm
+
 RUN apt-get update && apt-get install -y \
     libpq-dev \
     libzip-dev \
     unzip \
     libonig-dev \
-    libxml2-dev && \
+    libxml2-dev \
+    curl gpg && \
 	docker-php-ext-install -j$(nproc) pdo pdo_pgsql zip mbstring pcntl
 
+RUN curl -sL https://deb.nodesource.com/setup_20.x | bash ;\
+    apt-get update; \
+    apt-get install -y nodejs
+
 RUN php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');" \
 && php composer-setup.php --install-dir=/usr/local/bin --filename=composer \
-&& php -r "unlink('composer-setup.php');"
+&& php -r "unlink('composer-setup.php');"
+
+WORKDIR /var/www/trial
+COPY ./app/composer.json ./app/composer.lock ./app/package.json ./app/yarn.lock ./app/symfony.lock ./
+
+RUN composer install && npm install -g yarn -y && yarn install