Correct server name replacement command

Should no longer give server warning about being unable to determine
ServerName.

Author: XedinUnknown

docker/Dockerfile_wp

@@ -40,7 +40,8 @@ COPY docker/wait-for-it.sh /usr/local/bin
 RUN curl -O https://raw.githubusercontent.com/wp-cli/builds/gh-pages/phar/wp-cli.phar \
     && chmod +x wp-cli.phar \
     && mv wp-cli.phar /usr/local/bin/wp
-RUN sed -i 's|#ServerName www.example.com|ServerName ${WP_DOMAIN}|' /etc/apache2/sites-available/*.conf
+RUN sed -i "s|#ServerName www.example.com|ServerName ${WP_DOMAIN}|" /etc/apache2/sites-available/*.conf
+RUN sed -i "s|#ServerName www.example.com|ServerName ${WP_DOMAIN}|" /etc/apache2/apache2.conf /etc/apache2/conf-available/*.conf
 
 WORKDIR ${DOCROOT_PATH}
 COPY --from=vendor-dev ${BUILD_ROOT_PATH} ${PROJECT_MOUNT_PATH}