🖥
#Rails + docker-compose + volume mount + dotenv gem の組み合わせで docker コンテ
Conclusion
- .env file copied from host and exist in docker container ( BAD CASE )
- "dotenv" gem read .env with rails console and rspec
- not exestence env in docker container appears in rails!
HEY DO NOT DO COPY FUZZY with Dockerfile
What was the trouble
is this the trouble dependent on my environment or code ?
.env
ABC=XXX
docker-compose up
.env file effect for build docker-compose file
it for not docker container ENV
docker container
Yes so not set ABC env in container
root@c0d7a2a32aec:/app# env | grep ABC
root@c0d7a2a32aec:/app#
but ...
Try rails console
oh whats happen!?
[1] pry(main)> ENV['ABC']
=> "xxx"
Try Ruby pry
there is not ENV['ABC']
it seems rails only trouble
[1] pry(main)> ENV['ABC']
=> nil
I noticed
rails read .env file ?
this docker container BAD copy
copy all current directory files
COPY . .
So .env file is in docker container
root@432f3ef01b16:/app# cat .env
ABC=xxx
Try remove .env
And rerun rails console
root@349934df34c4:/app# rm .env
specify do not use spring cache
root@349934df34c4:/app# DISABLE_SPRING=1 bundle exec rails console
[1] pry(main)> ENV['ABC']
=> nil
[2] pry(main)>
ENV leave!
Reason
Gemfile
group :development, :test do
gem "dotenv-rails"
Ah I found maybe
Finally i tried
i remove gem "dotenv-rails" in Gemffile
bundle install
and Try rails console
( and .env file is in docker container )
[2] pry(main)> ENV['ABC']
=> "xxx"
🎉
Conclusion
Do not copy to container .env file !
Original by Github issue
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公開日時
2019-12-05
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