do not try to schedule jobs during asset precompilation

config/initializers/shrine.rb

@@ -11,12 +11,11 @@
     nil # migrations probably haven't run yet to create library table
   end
 
-  begin
+  unless ENV.fetch("PRECOMPILE", nil)
     Sidekiq::Cron::Job.create(
       name: "clear-shrine-cache",
       cron: "every hour",
       class: "CacheSweepJob"
     )
-  rescue RedisClient::CannotConnectError
   end
 end

config/initializers/usage_reports.rb

@@ -2,6 +2,5 @@
 
 Rails.application.config.after_initialize do
   # Make sure the schedule is loaded correctly
-  UsageReport.set_schedule!
-rescue RedisClient::CannotConnectError
+  UsageReport.set_schedule! unless ENV.fetch("PRECOMPILE", nil)
 end

docker/build.dockerfile

@@ -27,4 +27,5 @@ RUN \
   DATABASE_URL="nulldb://user:pass@localhost/db" \
   SECRET_KEY_BASE="placeholder" \
   RACK_ENV="production" \
+  PRECOMPILE="true" \
   bundle exec rake assets:precompile