DockerLaunchAction seems to depend on log to start browser

[ghogen]

LaunchBrowser won't work if the log setting for
Microsoft.Hosting.Lifetime is not set to information. Visual studio seems to wait for Now listening on: http://[::]:80 before actually launching a browser. No warning or error is written anywhere. So it took my quite some time to figure this one out.

I added docker and docker-compose to an existing project. This project uses serilog with serilog request logging (UseSerilogRequestLogging) and all microsoft logging is set to Warning.

Originally entered by @mathysd as https://github.com/MicrosoftDocs/visualstudio-docs/issues/6441

[NCarlsonMSFT]

@mathysd I've opened a PR to add docs for a work-around for this when debugging a single project in a container: MicrosoftDocs/visualstudio-docs#7541

Using the Launch Profile property launchBrowserTimeout you can specify a time to wait before starting the browser.

[dmikov]

Any update on that? We are using structured loging so we don't have that phrase at all it's broken out. So levels don't help.

[NCarlsonMSFT]

@dmikov As now documented in: https://learn.microsoft.com/en-us/visualstudio/containers/container-launch-settings there is now a launch profile property launchBrowserTimeout. If you set that to 1, then after 1 second the browser will launch w/o waiting for the log output.

[waleed-alharthi]

Just in case a lost soul ends up here looking for a solution:

An example of setting logging levels in docker-compose.yml:

version: '3.4'

services:
  clamp:
    image: ${DOCKER_REGISTRY-}app
    ports:
      - "80:80"
      - "443:443"
    depends_on:
      - db
    environment:
      ASPNETCORE_ENVIRONMENT: Development #use Development to see full log messages, use Production to optimize for size and performance
      ConnectionStrings__DefaultConnection: "Host=clamp-db;Port=5432;Database=postgres;Username=postgres;Password=yes;Include Error Detail=true"
      Logging__LogLevel__Default: "Information" #use Debug to see full log messages, use Information to optimize for size and performance, also Warning, Error, Critical; Warning made browser launch much slower!
      Logging__LogLevel__Npgsql: "Warning" #i don't want to see all those EF Core messages
      SeedData: true
    build:
      context: .
      dockerfile: App/Dockerfile

Similar in appsettings.json or appsettings.Development.json

{
  "ConnectionStrings": {
    "DefaultConnection": "Host=localhost;Port=5432;Database=postgres;Username=postgres;Password=yes;Include Error Detail=true" //database created when running compose project, maps to localhost
  },
  "DetailedErrors": true,
  "Logging": {
    "LogLevel": {
      "Default": "Information",
      "Microsoft.AspNetCore": "Information", // If changed from "Information" browser launch becomes very slow
      "Npgsql": "Warning" // Set the desired log level here (Debug, Information, Warning, Error, etc.)
    }
  },
  "SeedData": true
}