Can not share volume between services defined in docker-compose - docker

Question

I'm running Docker for Mac Version 17.12.0-ce-mac55
I have a docker-compose file that I'm converting from docker-compose version 3 to version 2 to work better with Openshift.
---
version: '2'
services:
fpm:
build:
context: .
dockerfile: Dockerfile.openshift
args:
TIMEZONE: America/Chicago
APACHE_DOCUMENT_ROOT: /usr/local/apache2/htdocs
image: widget-fpm
restart: always
depends_on:
- es
- db
environment:
# taken from sample.env
- TIMEZONE=${TIMEZONE}
- APACHE_DOCUMENT_ROOT=/usr/local/apache2/htdocs
- GET_HOSTS_FROM=dns
- SYMFONY__DATABASE__HOST=db
- SYMFONY__DATABASE__PORT=5432
- SYMFONY__DATABASE__NAME=widget
- SYMFONY__DATABASE__USER=widget
- SYMFONY__DATABASE__PASSWORD=widget
- SYMFONY__DATABASE__SCHEMA=widget
- SYMFONY__DATABASE__DRIVER=pdo_pgsql
- SYMFONY_ENV=prod
- SYMFONY__ELASTICSEARCH__HOST=es:9200
- SYMFONY__SECRET=dsakfhakjhsdfjkhajhjds
- SYMFONY__LOCALE=en
- SYMFONY__RBAC__HOST=rbac
- SYMFONY__RBAC__PROTOCOL=http
- SYMFONY__RBAC__CONNECT__PATH=v1/connect
- SYMFONY__PROJECT_URL=http://localhost
- SYMFONY__APP__NAME=widget
- SYMFONY__CURRENT__API__VERSION=1
volumes:
# use docroot env to change this directory
- src:/usr/local/apache2/htdocs
- symfony-cache:/usr/local/apache2/htdocs/app/cache
- symfony-log:/usr/local/apache2/htdocs/app/logs
expose:
- "9000"
networks:
- client-network
- data-network
labels:
kompose.service.expose: "false"
webserver:
build: ./provisioning/webserver/apache
image: widget_web
restart: "no"
ports:
- "80"
- "443"
volumes_from:
- fpm:ro
depends_on:
- fpm
networks:
- client-network
labels:
com.singlehop.description: "Widget Service Web Server"
com.singlehop.development: "false"
kompose.service.expose: "true"
kompose.service.type: "nodeport"
db:
build: ./provisioning/database/postgres
image: widget_postgres
restart: always
volumes:
- data-volume:/var/lib/postgresql/data
environment:
POSTGRES_USER: widget
POSTGRES_PASSWORD: widget
expose:
- "5432"
networks:
- data-network
labels:
com.singlehop.description: "Widget Service Postgres Database Server"
com.singlehop.development: "false"
io.openshift.non-scalable: "true"
kompose.service.expose: "false"
kompose.volume.size: 100Mi
es:
image: elasticsearch:5.6
restart: always
environment:
#- cluster.name=docker-cluster
#- bootstrap.memory_lock=true
- "ES_JAVA_OPTS=-Xms512m -Xmx512m"
command: ["-Ecluster.name=docker-cluster", "-Ebootstrap.memory_lock=true"]
ulimits:
memlock:
soft: -1
hard: -1
labels:
com.singlehop.description: "Generic Elasticsearch5 DB"
com.singlehop.development: "false"
kompose.service.expose: "false"
kompose.volume.size: 100Mi
volumes:
- es-data:/usr/share/elasticsearch/data
expose:
- "9200-9300"
networks:
- data-network
migration:
# #todo can we use the exact same build/image I created above?
image: singlehop/widget-fpm
environment:
# taken from sample.env
- TIMEZONE=America/Chicago
- APACHE_DOCUMENT_ROOT=/usr/local/apache2/htdocs
- GET_HOSTS_FROM=dns
- SYMFONY__DATABASE__HOST=db
- SYMFONY__DATABASE__PORT=5432
- SYMFONY__DATABASE__NAME=widget
- SYMFONY__DATABASE__USER=widget
- SYMFONY__DATABASE__PASSWORD=widget
- SYMFONY__DATABASE__SCHEMA=widget
- SYMFONY__DATABASE__DRIVER=pdo_pgsql
- SYMFONY_ENV=prod
- SYMFONY__ELASTICSEARCH__HOST=es:9200
- SYMFONY__SECRET=dsakfhakjhsdfjkhajhjds
- SYMFONY__LOCALE=en
- SYMFONY__PROJECT_URL=http://localhost
- SYMFONY__APP__NAME=widget
- SYMFONY__CURRENT__API__VERSION=1
entrypoint: ["/usr/local/bin/php","app/console","--no-interaction"]
command: doctrine:migrations:migrate
volumes:
- src:/usr/local/apache2/htdocs
depends_on:
- db
networks:
- data-network
labels:
com.singlehop.description: "Widget Automated Symfony Migration"
com.singlehop.development: "false"
volumes:
src: {}
data-volume: {}
es-data: {}
symfony-cache: {}
symfony-log: {}
networks:
client-network:
data-network:
I'm using the fpm service to act like a data container and share PHP code to the webserver service. For some reason the named volume src is not being shared to the webserver service/container. I've tried both setting the volumes and using volumes_from.
I'm assuming this is possible and I feel like it would be bad practice to do another copy of the source code in the widget_web Dockerfile.

Answer 1

The depends_on in the fpm service is breaking the named volume src. When I removed the depends_on declaration it worked like I assumed it would work. I can't tell if this is a bug or working as designed.