Azure App service settings not applied with docker

Question

I'm new to Azure Deployment & DevOps,

This time I'm doing a small project to create a NestJS API with Azure App Service, using a customized docker image. Everything was deployed well with the right connection credentials environment variable to the database. However, when I tried to replace these environment variable with

config.service.ts

const PORT = process.env.APPSETTING_PORT;
const MODE = process.env.APPSETTING_MODE;
const POSTGRES_HOST = process.env.APPSETTING_POSTGRES_HOST;
const POSTGRES_PORT : any = process.env.APPSETTING_POSTGRES_PORT;
const POSTGRES_USER = process.env.APPSETTING_POSTGRES_USER;
const POSTGRES_PASSWORD = process.env.APPSETTING_POSTGRES_PASSWORD;
const POSTGRES_DATABASE = process.env.APPSETTING_POSTGRES_DATABASE;

, after create the app in azure I assign the values with this command on Azure CLI:

az webapp config appsettings set --resource-group <my_rs_group> --name <my_app_name> --settings WEBSITES_PORT=80 APPSETTING_POSTGRES_HOST=<my_host_name>\ APPSETTING_POSTGRES_PORT=5432 APPSETTING_POSTGRES_DATABASE=postgres \ APPSETTING_POSTGRES_USER=<my_user_name> APPSETTING_POSTGRES_PASSWORD=<my_host_pw>\ APPSETTING_PORT=80 APPSETTING_MODE=PROD APPSETTING_RUN_MIGRATION=true

It's been 2 days I'm bothered with this issue and have been going through many similar threads on the site, but I couldn't resolve this issue, the docker container runtime log always show that these environment variables are failed to be applied.

Have you checked in the Portal if the values were assigned correctly? — CSharpRocks, Oct 06 '21 at 10:50
Is there any sample where one successfully use app settings variables with nodejs on azure? — T PHo, Oct 06 '21 at 11:38
**DO NOT post images of code, data, error messages, etc.** - copy or type the text into the question. [ask] — Rob, Oct 11 '21 at 09:23

score 1 · Accepted Answer · answered Oct 09 '21 at 12:25

I'm answer my own question since I found the thread that resolves this issue, although for some reason this problem is unpopular, linking it down here,

404 Error when trying to fetch json file from public folder in deployed create-react-app

It's vexing that Microsoft didn't make it obvious in their documentation that for nodejs environment, need to set const {env} = process; and access it through PORT = env.APPSETTING_PORT; for example will help the server to apply the app settings variable properly at docker runtime.

Hope whoever meets this issue will not waste time.

Azure App service settings not applied with docker

1 Answers1