node.jsdockerdocker-swarm

Read value of docker config from nodejs app

I have created a docker config from a json file, I need my node.js app to read the value(json) from the configs, how can I achieve that?

docker config create my_config ./config.json

>dg426haahpi5ezmkkj5kyl3sn

docker config ls

>ID                          NAME                CREATED             UPDATED
 dg426haahpi5ezmkkj5kyl3sn   my_config           7 seconds ago       7 seconds ago
Solution

  • To access docker configs they are mounted into services. This can be done on the docker service create command line but usually via the configs compose directive.

    compose.yml

    configs:
  node_config:
    external: true
    name: my_config

services:
  my_node_service:
    image: node:lts
    configs:
      - source: node_config
        target: /app/config.json