Build Arguments

Use build arguments to modify the app or its behaviour during build time

This functionality requires at least auterion-app-api 3 to be available

You may specify build-time arguments in the auterion-app.yml file using the build-args keyword:

auterion-app.yml

services:
  test-app: 
    ssh: true
    build: .
    build-args:
      BAR: ${FOO}

The environment variable FOO and the docker build argument BAR can then be defined in the environment where auterion-cli is executed, for example:

# This will assign "123" to the BAR variable in the Dockerfile
FOO="123" auterion-cli app build

Alternatively the environment variable can be defined in a top-level .env file in the app directory:

.env

# This will also assign "123" to the BAR variable in the Dockerfile
FOO="123"

Note that environment variables defined from the command line will overwrite the variables already defined in the .env file.

The BAR docker build argument can then be used at build-time from your Dockerfile:

Dockerfile

FROM auterion/app-base:v2

ARG BAR
RUN echo "My docker build arg is ${BAR}"