Using VSCode to debug a .NETCore application running inside a Docker container

docker-compose.yml

version: "3"
services:
    myapp:
        container_name: myapp
        build:
          context: .

Dockerfile

FROM microsoft/dotnet:2.2-sdk AS build
WORKDIR /app

# copy csproj and restore as distinct layers
COPY *.sln .
COPY myapp/*.csproj ./myapp/
RUN dotnet restore

# copy everything else and build app
COPY myapp/. ./myapp/
WORKDIR /app/myapp
RUN dotnet publish -c Debug -o out

FROM microsoft/dotnet:2.2-aspnetcore-runtime AS runtime
WORKDIR /app
COPY --from=build /app/myapp/out ./
RUN apt-get update 
RUN apt-get install -y --no-install-recommends apt-utils 
RUN apt-get install -y curl unzip procps
RUN curl -sSL https://aka.ms/getvsdbgsh | bash /dev/stdin -v latest -l /publish/vsdbg;
ENTRYPOINT ["dotnet", "myapp.dll"]

launch.json

{
    "version": "0.2.0",
    "configurations": [
        {
            "name": ".NET Core Docker Attach",
            "type": "coreclr",
            "request": "attach",
            "processId": "${command:pickRemoteProcess}",
            "sourceFileMap": {
                "/app": "${workspaceFolder}"
            },
            "pipeTransport": {
                "pipeProgram": "docker",
                "pipeArgs": [ "exec", "-i", "myapp" ],
                "debuggerPath": "/publish/vsdbg/vsdbg",
                "pipeCwd": "${workspaceRoot}",
                "quoteArgs": false
            }
        }
    ]
}