CODEWITHSUNDEEP
dockerdocker-compose
Simon R
Simon R

Reputation: 3772

Add extra_hosts to docker file

I have a docker image which is based off node:12. This image, along with others, are brought up via a docker-composer.yml file. The issue I am having is that I am unable to add extra_hosts to the container. In my yml file - I've got the following

my-app:
  image: <image_name>
  container_name: <container_name>
  extra_hosts:
    - "somehost:162.242.195.82"

This appears to work with other containers but not ones based of node:12. Is this functionality not available to images based off node:12? Or am I doing something wrong?

Upvotes: 1

Views: 1233

Answers (2)

Jono20201
Jono20201

Reputation: 3205

Potential workaround:

Create a Dockerfile which uses node:12 as your parent image and then write your host into the /etc/hosts manually. Then update your compose setup to build from that Dockerfile.

As mentioned below, this is purely a hacky workaround. It may be worth trying the other node:12 distribution such as node:12-alpine.

Upvotes: 0

Mich&#233;e Lengronne
Mich&#233;e Lengronne

Reputation: 789

Check the base image of the node:12, you have other choices (Stretch, Alpine, Buster) https://hub.docker.com/_/node/

It is a very bad idea to alter the /etc/hosts of an image manually and to build a new image with an altered /etc/hosts containing specific infos.

Upvotes: 1

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