Improve docker setup script (#7378)

* Add set -e to docker-setup script

* Add error handling for db setup stage

* Sometimes Elasticsearch takes time to boot up

* Also delete docker_data

* search:setup must come first

* Revert "Sometimes Elasticsearch takes time to boot up"

This reverts commit e975f6e5c3edad084d4f2c4d8718675bf5c8d07c.

Reason for revert:
Instead of using wait-on, we can use Docker’s health check instead

See review comment:
https://github.com/thepracticaldev/dev.to/pull/7378#discussion_r411839255

* Use wait-on without installing into package.json

* Add /usr/src/app/node_modules to volumes

Otherwise, webpacker will not run in docker-compose.

See: https://stackoverflow.com/questions/30043872/docker-compose-node-modules-not-present-in-a-volume-after-npm-install-succeeds

bin/docker-setup

@@ -1,10 +1,26 @@
 #!/usr/bin/env sh
 
+set -e
+
 echo "== Building Docker image (this may take a while) =="
 docker-compose build
 
+echo "== Ensuring Elasticsearch data directory is owned by the correct uid =="
+docker-compose run elasticsearch chown elasticsearch:elasticsearch /usr/share/elasticsearch/data
+
 echo "== Setting up database =="
-docker-compose run web rails db:setup db:migrate search:setup data_updates:run
+on_db_setup_failed() {
+  echo "Database setup failed with exit code $1." >&2
+  echo "" >&2
+  echo "Check the Docker logs using:" >&2
+  echo "    docker-compose logs" >&2
+  echo "" >&2
+  echo "Once you fixed the error, try running the script again." >&2
+  echo "To also delete all data, run this before retrying:" >&2
+  echo "    docker-compose down -v && sudo rm -rf docker_data" >&2
+  exit $1
+}
+docker-compose run web sh -c 'yarn global add wait-on && wait-on -t 30000 http-get://elasticsearch:9200/ && rails search:setup db:setup db:migrate data_updates:run' || on_db_setup_failed $?
 
 echo "== Starting app =="
 docker-compose up

docker-compose.yml

@@ -16,6 +16,7 @@ services:
       REDIS_SESSIONS_URL: redis://redis:6379
     volumes:
       - .:/usr/src/app
+      - /usr/src/app/node_modules
     command: bundle exec rails server -b 0.0.0.0 -p 3000
   webpacker:
     build: .