Docker sync files - docker

Question

im not familiar with docker at all. im trying to use symfony with docker (windows). for docker i use (without changes, only +mysql)
https://github.com/dunglas/symfony-docker
it works well
problem that when i change files or create new files changes not sync, only after new build.
Please tell how to write proper dockerfile so files from host (and from docker) will be in sync
i need to use docker volumes, but idk how 😁
dockerfile
ARG PHP_VERSION=8.1
ARG CADDY_VERSION=2
# "php" stage
FROM php:${PHP_VERSION}-fpm-alpine AS symfony_php
# persistent / runtime deps
RUN apk add --no-cache \
acl \
fcgi \
file \
gettext \
git \
;
ARG APCU_VERSION=5.1.21
RUN set -eux; \
apk add --no-cache --virtual .build-deps \
$PHPIZE_DEPS \
icu-data-full \
icu-dev \
libzip-dev \
zlib-dev \
; \
\
docker-php-ext-configure zip; \
docker-php-ext-install -j$(nproc) \
intl \
zip \
; \
pecl install \
apcu-${APCU_VERSION} \
; \
pecl clear-cache; \
docker-php-ext-enable \
apcu \
opcache \
; \
\
runDeps="$( \
scanelf --needed --nobanner --format '%n#p' --recursive /usr/local/lib/php/extensions \
| tr ',' '\n' \
| sort -u \
| awk 'system("[ -e /usr/local/lib/" $1 " ]") == 0 { next } { print "so:" $1 }' \
)"; \
apk add --no-cache --virtual .phpexts-rundeps $runDeps; \
\
apk del .build-deps
RUN docker-php-ext-install mysqli pdo pdo_mysql && docker-php-ext-enable pdo_mysql
COPY docker/php/docker-healthcheck.sh /usr/local/bin/docker-healthcheck
RUN chmod +x /usr/local/bin/docker-healthcheck
HEALTHCHECK --interval=10s --timeout=3s --retries=3 CMD ["docker-healthcheck"]
RUN ln -s $PHP_INI_DIR/php.ini-production $PHP_INI_DIR/php.ini
COPY docker/php/conf.d/symfony.prod.ini $PHP_INI_DIR/conf.d/symfony.ini
COPY docker/php/php-fpm.d/zz-docker.conf /usr/local/etc/php-fpm.d/zz-docker.conf
COPY docker/php/docker-entrypoint.sh /usr/local/bin/docker-entrypoint
RUN chmod +x /usr/local/bin/docker-entrypoint
VOLUME /var/run/php
COPY --from=composer:latest /usr/bin/composer /usr/bin/composer
# https://getcomposer.org/doc/03-cli.md#composer-allow-superuser
ENV COMPOSER_ALLOW_SUPERUSER=1
ENV PATH="${PATH}:/root/.composer/vendor/bin"
WORKDIR /srv/app
# Allow to choose skeleton
ARG SKELETON="symfony/skeleton"
ENV SKELETON ${SKELETON}
# Allow to use development versions of Symfony
ARG STABILITY="stable"
ENV STABILITY ${STABILITY}
# Allow to select skeleton version
ARG SYMFONY_VERSION=""
ENV SYMFONY_VERSION ${SYMFONY_VERSION}
# Download the Symfony skeleton and leverage Docker cache layers
#RUN composer create-project "${SKELETON} ${SYMFONY_VERSION}" . --stability=$STABILITY --prefer-dist --no-dev --no-progress --no-interaction; \
# composer clear-cache
###> recipes ###
###> doctrine/doctrine-bundle ###
#RUN apk add --no-cache --virtual .pgsql-deps postgresql-dev; \
# docker-php-ext-install -j$(nproc) pdo_pgsql; \
# apk add --no-cache --virtual .pgsql-rundeps so:libpq.so.5; \
# apk del .pgsql-deps
###< doctrine/doctrine-bundle ###
###< recipes ###
COPY . .
RUN set -eux; \
mkdir -p var/cache var/log; \
composer install --prefer-dist --no-dev --no-progress --no-scripts --no-interaction; \
composer dump-autoload --classmap-authoritative --no-dev; \
composer symfony:dump-env prod; \
composer run-script --no-dev post-install-cmd; \
chmod +x bin/console; sync
VOLUME /srv/app/var
ENTRYPOINT ["docker-entrypoint"]
CMD ["php-fpm"]
FROM caddy:${CADDY_VERSION}-builder-alpine AS symfony_caddy_builder
RUN xcaddy build \
--with github.com/dunglas/mercure \
--with github.com/dunglas/mercure/caddy \
--with github.com/dunglas/vulcain \
--with github.com/dunglas/vulcain/caddy
FROM caddy:${CADDY_VERSION} AS symfony_caddy
WORKDIR /srv/app
COPY --from=dunglas/mercure:v0.11 /srv/public /srv/mercure-assets/
COPY --from=symfony_caddy_builder /usr/bin/caddy /usr/bin/caddy
COPY --from=symfony_php /srv/app/public public/
COPY docker/caddy/Caddyfile /etc/caddy/Caddyfile
docker-compose
version: "3.4"
services:
db:
image: mysql
# NOTE: use of "mysql_native_password" is not recommended: https://dev.mysql.com/doc/refman/8.0/en/upgrading-from-previous-series.html#upgrade-caching-sha2-password
# (this is just an example, not intended to be a production configuration)
command: --default-authentication-plugin=mysql_native_password
restart: always
environment:
MYSQL_ROOT_PASSWORD: root
adminer:
image: adminer
restart: always
ports:
- 8080:8080
php:
build:
context: .
target: symfony_php
args:
SYMFONY_VERSION: ${SYMFONY_VERSION:-}
SKELETON: ${SKELETON:-symfony/skeleton}
STABILITY: ${STABILITY:-stable}
restart: unless-stopped
volumes:
- php_socket:/var/run/php
healthcheck:
interval: 10s
timeout: 3s
retries: 3
start_period: 30s
environment:
MERCURE_URL: ${CADDY_MERCURE_URL:-http://caddy/.well-known/mercure}
MERCURE_PUBLIC_URL: https://${SERVER_NAME:-localhost}/.well-known/mercure
MERCURE_JWT_SECRET: ${CADDY_MERCURE_JWT_SECRET:-!ChangeMe!}
caddy:
build:
context: .
target: symfony_caddy
depends_on:
- php
environment:
SERVER_NAME: ${SERVER_NAME:-localhost, caddy:80}
MERCURE_PUBLISHER_JWT_KEY: ${CADDY_MERCURE_JWT_SECRET:-!ChangeMe!}
MERCURE_SUBSCRIBER_JWT_KEY: ${CADDY_MERCURE_JWT_SECRET:-!ChangeMe!}
restart: unless-stopped
volumes:
- php_socket:/var/run/php
- caddy_data:/data
- caddy_config:/config
ports:
# HTTP
- target: 80
published: ${HTTP_PORT:-80}
protocol: tcp
# HTTPS
- target: 443
published: ${HTTPS_PORT:-443}
protocol: tcp
# HTTP/3
- target: 443
published: ${HTTP3_PORT:-443}
protocol: udp
volumes:
php_socket:
caddy_data:
caddy_config:

Answer 1

This is not something you declare on the dockerfile level, the dockerfile is a layer you tell the container (or the host) to add the container in it's run time. (Installations, copies..)
this a flag on the docker API `docker run -v vol:vol .... ```
Or inside of the docker-compose file
I see your docker-compose file has a declaration of volumes for service caddy.
Try to init the volume as an empty one
# bottom of the docker-compose file
volumes:
php_socket: {}
Docker is built upon layers, every change you'll make, will create a new layer and will be saved on the volume.