Add composer to web

build-scripts/web/Dockerfile

@@ -101,6 +101,8 @@ RUN sudo npm install npm@latest -g \
 # Create a symlink for node to nodejs.
 ## RUN ln -s /usr/bin/nodejs /usr/bin/node
 
+# Install Composer
+RUN curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer
 
 # Forward logs to docker log collector.
 RUN ln -sf /dev/stdout /var/log/apache2/access.log && \