Build an ASP.net Core Web API environment on Docker (VSCode) Part 1

procedure

• Dot new command to create webapi on VS Code Execute.

dotnet new webapi -o ./WebApi1

• Create a Docker file. The location is directly under the project. https://docs.docker.com/engine/examples/dotnetcore/ Change only the dll file name of ENTRYPOINT while keeping the one described in.

FROM mcr.microsoft.com/dotnet/sdk:5.0 AS build
WORKDIR /app

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

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

FROM mcr.microsoft.com/dotnet/aspnet:5.0 AS runtime
WORKDIR /app
COPY --from=build /app/out .

ENV ASPNETCORE_URLS=http://+:5000
EXPOSE 5000

ENTRYPOINT ["dotnet", "WebApi1.dll"]

• Open the command palette and select "Docker: Add Docker Compose Files to Workspace ...". You will be given several choices, but first select ".NET: ASP.net Core". The last two are optional.

• If the message shown below appears, select and execute ".NET: Generate Assets for Build and Debug" from the command palette, and then select and execute "Docker: Add Docker ~" again.

• Confirm that docker-compose.yml is created. Added "ports:" parameter.

# Please refer https://aka.ms/HTTPSinContainer on how to setup an https developer certificate for your ASP .NET Core service.

version: '3.4'

services:
  webapi1:
    image: webapi1
    container_name: webapi-container
    build:
      context: .
      dockerfile: ./Dockerfile
    ports: 
      - 5001:5000 #add to

• Execute docker-compose up command

docker-compose up

• If the message "Createting" appears, the creation is complete for the time being.

Creating webapi1_webapi1_1 ... done
Attaching to webapi1_webapi1_1
webapi1_1  | info: Microsoft.Hosting.Lifetime[0]
webapi1_1  |       Now listening on: http://[::]:5000
webapi1_1  | info: Microsoft.Hosting.Lifetime[0]
webapi1_1  |       Application started. Press Ctrl+C to shut down.        
webapi1_1  | info: Microsoft.Hosting.Lifetime[0]
webapi1_1  |       Hosting environment: Production
webapi1_1  | info: Microsoft.Hosting.Lifetime[0]
webapi1_1  |       Content root path: /app

• Confirmed operation with Postman