Volume files changes do not propagate in the browser

Question

My problem is as the title says, whatever change i make in a file the browser won't display it if i'm not rebuilding the image.I used sh to watch if the changes do exist inside the container and yes, they do.

I'm using docker-compose:

version: '3.7'
services:
  postgres:
    image: postgres:alpine
    restart: always
    environment:
      POSTGRES_DB: db
      POSTGRES_USER: root
      POSTGRES_PASSWORD: pw123
  php:
    build:
      context: .
      dockerfile: ./docker/php/Dockerfile
    restart: always
    env_file:
      - ./app/.env
    user: 1000:1000
  nginx:
    image: nginx:1.15.3-alpine
    restart: always
    volumes:
      - ./app:/usr/src/app
      - ./docker/nginx/default.conf:/etc/nginx/conf.d/default.conf:ro
    ports:
      - 80:80
    depends_on:
      - php

Here is my php service dockerfile:

# ./docker/php/Dockerfile
FROM php:7-fpm-alpine

RUN apk update && apk add build-base

RUN apk add postgresql postgresql-dev \
  && docker-php-ext-configure pgsql -with-pgsql=/usr/local/pgsql \
  && docker-php-ext-install pdo pdo_pgsql pgsql

#RUN docker-php-ext-install opcache

#RUN curl -o /tmp/composer-setup.php https://getcomposer.org/installer \
#&& curl -o /tmp/composer-setup.sig https://composer.github.io/installer.sig \
# Make sure we're installing what we think we're installing!
#&& php -r "if (hash('SHA384', file_get_contents('/tmp/composer-setup.php')) !== trim(file_get_contents('/tmp/composer-setup.sig'))) { unlink('/tmp/composer-setup.php'); echo 'Invalid installer' . PHP_EOL; exit(1); }" \
#&& php /tmp/composer-setup.php --no-ansi --install-dir=/usr/local/bin --filename=composer --snapshot \
#&& rm -f /tmp/composer-setup.*

COPY docker/php/opcache.ini /usr/local/etc/php/conf.d/opcache.ini

COPY app /usr/src/app

WORKDIR /usr/src/app
#install usermod
#RUN echo http://dl-2.alpinelinux.org/alpine/edge/community/ >> /etc/apk/repositories
#RUN apk --no-cache add shadow && usermod -u 1000 www-data

#RUN composer install --no-plugins --no-scripts

#ENV PATH="~/.composer/vendor/bin:./vendor/bin:${PATH}"

#RUN usermod -u 1000 www-data
#RUN chown -R www-data:www-data /var/cache
#RUN chown -R www-data:www-data /var/log
EXPOSE 9000
CMD ["php-fpm","--nodaemonize"]

It might not be a problem with docker, since i have basic understanding of web servers(nginx), php fpm, opcache one of those might create the problem so i'll post other conf files:

default.conf for nginx:

# ./docker/nginx/default.conf
server {
 server_name ~.*;

 location / {
     root /usr/src/app;

     try_files $uri /index.php$is_args$args;
 }

 location ~ ^/index\.php(/|$) {
     client_max_body_size 50m;

     fastcgi_pass php:9000;
     fastcgi_buffers 16 16k;
     fastcgi_buffer_size 32k;
     include fastcgi_params;
     fastcgi_param SCRIPT_FILENAME /usr/src/app/public/index.php;
 }

 error_log /dev/stderr debug;
 access_log /dev/stdout;
}

opcache.ini:

[opcache]
opcache.enable=1
; 0 means it will check on every request
; 0 is irrelevant if opcache.validate_timestamps=0 which is desirable in production
opcache.revalidate_freq=0
opcache.validate_timestamps=1
opcache.max_accelerated_files=10000
opcache.memory_consumption=192
opcache.max_wasted_percentage=10
opcache.interned_strings_buffer=16
opcache.fast_shutdown=1

Answer 1

You are mapping the app volume to NGINX but you are not serving files from there. This line fastcgi_pass PHP:9000 in your default.conf means that all traffic is (correctly) redirect to the PHP container.

Since you are serving files from your PHP container, that is where your volume should be mapped instead of copied (COPY app /usr/src/app).

Can you remove the (COPY ...) line from the php Dockerfile and then try this docker-compose:

version: '3.7'
services:
  postgres:
    image: postgres:alpine
    restart: always
    environment:
      POSTGRES_DB: db
      POSTGRES_USER: root
      POSTGRES_PASSWORD: pw123
  php:
    build:
      context: .
      dockerfile: ./docker/php/Dockerfile
    restart: always
    env_file:
      - ./app/.env
    volumes:
      - ./app:/usr/src/app
    user: 1000:1000
  nginx:
    image: nginx:1.15.3-alpine
    restart: always
    volumes:
      - ./docker/nginx/default.conf:/etc/nginx/conf.d/default.conf:ro
    ports:
      - 80:80
    depends_on:
      - php