Hi all,
I’m currently in the process of taking a Ruby on Rails proyect into CircleCI to run the build and test cycle. However, I’m having trouble because this proyect uses Docker Compose and I’ve managed to run the build step and to start the project, but running migrations throws an error I can’t understand.
The proyect uses 3 Docker images. Here’s the docker-compose.yml file:
Docker Compose YAML
version: '3'
services:
postgres:
image: postgres:10.3
ports:
- "5432"
env_file:
- .env
volumes:
- ./tmp/db:/var/lib/postgresql/data
web:
build: .
env_file:
- .env
command: bash -c "rm -f tmp/pids/server.pid && (bundle check || bundle install) && bundle exec whenever --update-crontab --set environment=${RAILS_ENV} && cron && bundle exec rails s -p 4000 -b '0.0.0.0'"
volumes:
- .:/var/www/web
ports:
- "4000:4000"
depends_on:
- postgres
nginx:
build:
context: .
dockerfile: Dockerfile_nginx
depends_on:
- web
links:
- web
ports:
- "3000:80"
The postgres image is downloaded from Docker Hub. The other two are defined as follows:
Here’s the web Dockerfile:
web Dockerfile
FROM ruby:2.5.0
ENV LANG C.UTF-8
RUN apt-get update -qq && apt-get install -y build-essential libpq-dev software-properties-common
# Node.js
RUN curl -sL https://deb.nodesource.com/setup_8.x | bash - \
&& apt-get install -y nodejs
# yarn
RUN curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add -\
&& echo "deb https://dl.yarnpkg.com/debian/ stable main" | tee /etc/apt/sources.list.d/yarn.list \
&& apt-get update \
&& apt-get install -y yarn
ENV APP_HOME /var/www/web
ENV RAILS_ROOT /var/www/web
RUN mkdir -p $RAILS_ROOT
WORKDIR $RAILS_ROOT
ADD Gemfile $RAILS_ROOT/Gemfile
ADD Gemfile.lock $RAILS_ROOT/Gemfile.lock
RUN gem install bundler
RUN bundle install --binstubs --jobs=3 --retry=3
COPY . .
RUN mkdir -p $RAILS_ROOT/log
RUN touch $RAILS_ROOT/log/cron.log
EXPOSE 4000
CMD cron -f && bundle exec puma
ADD . $RAILS_ROOT
And here’s the nginx Dockerfile:
nginx Dockerfile
# Base image
FROM nginx
# Install dependencies
RUN apt-get update -qq && apt-get -y install apache2-utils
# establish where Nginx should look for files
ENV RAILS_ROOT /var/www/web
# Set our working directory inside the image
WORKDIR $RAILS_ROOT
# create log directory
RUN mkdir log
# copy over static assets
COPY public public/
# Copy Nginx config template
COPY nginx.conf /tmp/docker.nginx
# substitute variable references in the Nginx config template for real values from the environment
# put the final config in its place
RUN envsubst '$RAILS_ROOT' < /tmp/docker.nginx > /etc/nginx/conf.d/default.conf
EXPOSE 80
# Use the "exec" form of CMD so Nginx shuts down gracefully on SIGTERM (i.e. `docker stop`)
CMD [ "nginx", "-g", "daemon off;" ]
In order to have both of those images available on CircleCI, I’ve uploaded them to Docker Hub. I can use them, then, from my config.yml file:
CircleCI config YAML
version: 2
jobs:
build:
working_directory: .
docker:
- image: felix91gr/proyesp-backend-main:0.0.2
- image: postgres:10.3
- image: felix91gr/proyesp-backend-nginx:0.0.1
steps:
- checkout
- setup_remote_docker
- run:
name: Install Docker client
command: |
set -x
VER="17.03.0-ce"
curl -L -o /tmp/docker-$VER.tgz https://get.docker.com/builds/Linux/x86_64/docker-$VER.tgz
tar -xz -C /tmp -f /tmp/docker-$VER.tgz
mv /tmp/docker/* /usr/bin
- run:
name: Install Docker Compose
command: |
set -x
curl -L https://github.com/docker/compose/releases/download/1.22.0/docker-compose-`uname -s`-`uname -m` > /usr/local/bin/docker-compose
chmod +x /usr/local/bin/docker-compose
- run:
name: Build service
command: docker-compose build
- run:
name: Run the backend daemon
command: docker-compose up -d
- run:
name: Put it down
command: docker-compose down
- run:
name: Run the migrations
command: |
docker-compose run web rake -f ./Rakefile db:create db:migrate
This doesn’t work, this is the error I get:
====>> Run the migrations
#!/bin/bash -eo pipefail
docker-compose run web rake -f ./Rakefile db:create db:migrate
Creating network "web_default" with the default driver
Creating web_postgres_1 ... done
rake aborted!
No Rakefile found (looking for: ./Rakefile)
/usr/local/bundle/gems/rake-12.3.1/exe/rake:27:in `<top (required)>'
(See full trace by running task with --trace)
Error: Exited with code 1
Step failed
Error: runner failed
Task failed
I realized there must be an error in my setup because when I run the command docker-compose run web ls in local, I see this:
Dockerfile Rakefile config.ru nginx.conf tmp
Dockerfile_nginx apiary.apib db package-lock.json vendor
Gemfile app doc.md public
Gemfile.lock bin docker-compose.yml spec
README.md config lib test
Whereas when I run the same command in my config.yml I see this:
^@^@tmp
Clearly there’s a mismatch. What’s the error? Sorry for my noviceness, it must be something really obvious that I’m just not seeing.
Thanks for your patience, and have a good day!
