[frontend] Introduces mailcatcher

This introduces mailcatcher to the development environment to make debugging
ActiveMailer related things easier.

You can view all mails sent by OBS at http://localhost:1080

Hint: Mails will only be sent if your Configuration.obs_url is set to some url or
your Configuration was created after 2018-02-21

docker-compose.yml

@@ -29,6 +29,7 @@ services:
       - .:/obs
     ports:
       - "3000:3000"
+      - "1080:1080"
     depends_on:
       - db
       - cache

docker-files/base/docker-bootstrap.sh

@@ -9,6 +9,7 @@ do
       phantomjs \
       nodejs6 npm6 \
       mariadb-client \
+      sqlite3-devel \
       git-core \
       ruby2.5-devel cyrus-sasl-devel openldap2-devel libxml2-devel zlib-devel libxslt-devel \
       perl-XML-Parser \

src/api/Dockerfile.frontend-base

@@ -10,7 +10,7 @@ RUN for i in ruby gem irb; do ln -s /usr/bin/$i.ruby2.5 /usr/local/bin/$i; done
 
 # foreman, which we only run in docker, needs a different thor version than OBS.
 # Installing the gem directly spares us from having to rpm package two different thor versions.
-RUN gem.ruby2.5 install --no-format-executable thor:0.19 foreman
+RUN gem.ruby2.5 install --no-format-executable thor:0.19 foreman mailcatcher
 
 # We copy the Gemfiles into this intermediate build stage so it's checksum
 # changes and all the subsequent stages (a.k.a. the bundle install call below)

src/api/Procfile

@@ -2,3 +2,4 @@ web: bundle exec rails server
 delayed: bundle exec script/delayed_job.api.rb run
 clock: bundle exec clockworkd --log-dir=log -l -c config/clock.rb run 
 search: bundle exec rake ts:rebuild NODETACH=true
+mailcatcher: mailcatcher --ip 0.0.0.0 -f --no-quit -v

src/api/config/environments/development.rb

@@ -11,6 +11,12 @@
   # Do not eager load code on boot.
   config.eager_load = false
 
+  # see http://guides.rubyonrails.org/action_mailer_basics.html#example-action-mailer-configuration
+  config.action_mailer.delivery_method = :smtp
+  # we deliver to mailcatcher https://github.com/sj26/mailcatcher
+  config.action_mailer.smtp_settings = { address: '127.0.0.1', port: '1025' }
+  config.action_mailer.raise_delivery_errors = true
+
   # Show full error reports and disable caching
   config.consider_all_requests_local       = true
   config.action_controller.perform_caching = true
@@ -24,20 +30,12 @@
     config.session_store = :mem_cache_store
   end
 
-  # Don't care if the mailer can't send
-  config.action_mailer.raise_delivery_errors = false
-
-  config.action_mailer.delivery_method = :test
-
   # Print deprecation notices to the Rails logger
   config.active_support.deprecation = :log
 
   # Only use best-standards-support built into browsers
   config.action_dispatch.best_standards_support = :builtin
 
-  config.action_mailer.raise_delivery_errors = false
-  config.action_mailer.perform_caching = false
-
   # Do not compress assets
   config.assets.compress = false