Fix docker compose flow (#275)

* Make docker-compose actually useful

* Add docker-compose debug instructions to readme

* Add db seed for docker-compose instructions to readme

* Update readme to include migrate step

* DB connection

Dockerfile

@@ -16,7 +16,7 @@ RUN apk add --no-cache build-base yarn postgresql-dev git
 
 # Install bundler to run bundle exec
 # This should be the same version as the Gemfile.lock
-RUN gem install bundler:2.2.3 --no-document
+RUN gem install bundler:2.3.4 --no-document
 
 # Install gems defined in Gemfile
 COPY .ruby-version Gemfile Gemfile.lock /app/

Dockerfile_dev

@@ -0,0 +1,33 @@
+# Build compilation image
+FROM ruby:3.0.3-alpine3.14 as builder
+
+# The application runs from /app
+WORKDIR /app
+
+# Add the timezone as it's not configured by default in Alpine
+RUN apk add --update --no-cache tzdata && cp /usr/share/zoneinfo/Europe/London /etc/localtime && echo "Europe/London" > /etc/timezone
+
+RUN apk add --no-cache build-base yarn postgresql-dev git bash
+
+# Install bundler to run bundle exec
+# This should be the same version as the Gemfile.lock
+RUN gem install bundler:2.3.4 --no-document
+
+# Install gems defined in Gemfile
+COPY .ruby-version Gemfile Gemfile.lock /app/
+
+ARG BUNDLE_FLAGS="--jobs=4 --no-binstubs --no-cache"
+RUN bundle install ${BUNDLE_FLAGS}
+
+# Install node packages defined in package.json, including webpack
+COPY package.json yarn.lock /app/
+RUN yarn install --frozen-lockfile
+
+# Copy all files to /app (except what is defined in .dockerignore)
+COPY . /app/
+
+ENV PORT=8080
+
+EXPOSE ${PORT}
+
+CMD RAILS_ENV=${RAILS_ENV} bundle exec rake db:migrate && bundle exec rails s -e ${RAILS_ENV} -p ${PORT} --binding=0.0.0.0

Gemfile.lock

@@ -8,7 +8,7 @@ GIT
 
 GIT
   remote: https://github.com/baarkerlounger/devise.git
-  revision: ac956cc2a58daa57e071202967a212a1dac08053
+  revision: 6d0b6b52a9d0e87ae6d9f9acb562169751623078
   branch: dluhc-fixes
   specs:
     devise (4.8.1)
@@ -31,7 +31,7 @@ GIT
 
 GIT
   remote: https://github.com/tagliala/activeadmin.git
-  revision: d1492c54e76871d95f3a7ff20e445b48f455d4cb
+  revision: 920f14393bcf56cea9dc155276d20bcd10f4fa85
   branch: feature/railties-7
   specs:
     activeadmin (2.9.0)

README.md

@@ -29,25 +29,37 @@ Pre-requisites:
 4. Run the database migrations:\
   `rake db:migrate`
 
-5. Install the frontend depenencies:\
+5. Seed the database if required:\
+`rake db:seed`
+
+6. Install the frontend depenencies:\
   `yarn install`
 
-6. Start the Rails server:\
+7. Start the Rails server:\
   `bundle exec rails s`
 
 The Rails server will start on <http://localhost:3000>.
 
 ### Using Docker
 
-```sh
-docker-compose build
-docker-compose run --rm app rails db:create
-docker-compose up
-```
+1. Build the image:\
+`docker-compose build`
+
+2. Run the database migrations:\
+`docker-compose run --rm app /bin/bash -c 'rake db:migrate'`
+
+3. Seed the database if required:\
+`docker-compose run --rm app /bin/bash -c 'rake db:seed'`
+
+4. To be able to debug with Pry run the app using:\
+`docker-compose run --service-ports app`
+
+If this is not needed you can run `docker-compose up` as normal
+
 
 The Rails server will start on <http://localhost:8080>.
 
-Note `docker-compose` runs the production docker image (`RAILS_ENV=production`) as the Dockerfile doesn’t include development gems to keep the image size down.
+
 
 ## Infrastructure
 

config/database.yml

@@ -28,8 +28,8 @@ default: &default
 
 development:
   <<: *default
-  database: data_collector_development
-  host: localhost
+  database: <%= ENV['DB_DATABASE'] || 'data_collector_development' %>
+  host: <%= ENV['DB_HOST'] || 'localhost' %>
 
 staging:
   <<: *default

docker-compose.yml

@@ -5,7 +5,7 @@ volumes:
 
 services:
   db:
-    image: postgres:13.3-alpine
+    image: postgres:13.5-alpine
     restart: always
     # To preserve data between runs of docker-compose, we mount a folder from the host machine.
     volumes:
@@ -20,9 +20,7 @@ services:
   app:
     build:
       context: .
-      dockerfile: ./Dockerfile
-      args:
-        GIT_COMMIT_SHA: DOCKER_COMPOSE_GIT_COMMIT_SHA
+      dockerfile: ./Dockerfile_dev
     ports:
       - 8080:8080
     depends_on:
@@ -32,7 +30,7 @@ services:
       - DB_DATABASE=data_collector
       - DB_USERNAME=postgres
       - DB_PASSWORD=password
-      - RAILS_ENV=production
+      - RAILS_ENV=development
       - RAILS_SERVE_STATIC_FILES=true
       - RAILS_LOG_TO_STDOUT=true
       - SECRET_KEY_BASE=abcd1234