Refactor jarbas-backend docker image

[caduvieira]

Changes to jarbas-backend

• Add HEALTHCHECK to dockerfile using goss to validate See https://medium.com/@aelsabbahy/docker-1-12-kubernetes-simplified-health-checks-and-container-ordering-with-goss-fa8debbe676c
• Add entrypoint to dockerfile
• Fix documentation accordingly

How to test:

Change docker-compose.yml django from image to build: .

sed -i "s\image: datasciencebr/jarbas-backend\build: .\g" docker-compose.yml
docker-compose build django
docker-compose run --rm django test
docker-compose run --rm django check
docker inspect -f '{{ range .State.Health.Log }}{{ println "======\nStart:" .Start }}{{ .Output }}{{end}}' jarbas_django_1

@anaschwendler please could review?

[caduvieira]

Forgot to mention the size reduction. From 373M to 178M

[anaschwendler]

Thanks @caduvieira, that seem to be really good!

As @cuducos said that he want to test by himself, I'll let him properly test, but if he doesn't do that I'll test it later :)

[cuducos]

As @cuducos said that he want to test by himself, I'll let him properly test, but if he doesn't do that I'll test it later :)

Make yourself at home, go on ; )

[anaschwendler]

Ok, so let's go test this PR, what I plan to do:

1. Clone the repository:

   $ git clone git@github.com:datasciencebr/jarbas.git

2. Open the repo folder:

   $ cd jarbas

3. Checkout to @caduvieira branch:

   $ git checkout -b caduvieira-master master

4. Update the branch:

   $ git pull https://github.com/caduvieira/jarbas.git master

5. Copy the .env file:

   $ cp contrib/.env.sample env

6. Build and start services:

   $ docker build -t datasciencebr/jarbas-backend .
   $ docker run --rm django test
   $ docker run --rm django check
   $ docker inspect -f '{{ range .State.Health.Log }}{{ println "======\nStart:" .Start }}{{ .Output }}{{end}}' jarbas_django_1

   Result:

   
   ➜  jarbas git:(caduvieira-master) ✗ docker inspect -f '{{ range .State.Health.Log }}{{ println "======\nStart:" .Start }}{{ .Output }}{{end}}' jarbas_django_1
   ======
   Start: 2017-11-13 19:15:54.1284389 +0000 UTC
   ..

Total Duration: 0.088s Count: 2, Failed: 0, Skipped: 0

Start: 2017-11-13 19:16:54.2898246 +0000 UTC ..

Total Duration: 0.054s Count: 2, Failed: 0, Skipped: 0

Start: 2017-11-13 19:17:54.3989147 +0000 UTC ..

Total Duration: 0.138s Count: 2, Failed: 0, Skipped: 0

Start: 2017-11-13 19:18:54.8013659 +0000 UTC ..

Total Duration: 0.094s Count: 2, Failed: 0, Skipped: 0

Seems to be working!

[cuducos]

I did something wrong @caduvieira ?

This command was basically to use the Dockerfile docker-compose.yml instead of the image from Docker Hub. You can comment image: datasciencebr out of the Dockerfile docker-compose.yml replacing it by build: . manually.

[caduvieira]

Use the command

sed -i "s\image: datasciencebr/jarbas-backend\build: .\g" docker-compose.yml

to change the build to manual.

You could also run: docker build -t datasciencebr/jarbas-backend . If you dont want to use the sed command.

The inspect command expects the name of the container. You should change it accordingly

[anaschwendler]

Hi @caduvieira, I was having problems to run the sed command:

➜  jarbas git:(caduvieira-master) ✗ sed -i "s\image: datasciencebr/jarbas-backend\build: .\g" docker-compose.yml
sed: 1: "docker-compose.yml": extra characters at the end of d command

Am I doing something wrong?

[caduvieira]

Maybe something in different versions

Try using this other command and don't use the sed

docker build -t datasciencebr/jarbas-backend .

[anaschwendler]

Finally got it!

Here it is, works fine, thanks @caduvieira! I'll wait for @cuducos give an 👍 and then I'll merge!