CS5001: Program does not contain a static 'Main' method suitable for an entry point

Docker Engine Compose
1

Hi I’m tyring to run .net 8 core webassemply in a docker container, which will return be started from my docker compose. When I run docker file by it self, everything builds and no issues, but as soon as I try to run it from a docker-compose, that when I get

CSC : error CS5001: Program does not contain a static 'Main' method suitable for an entry point [/src/ThirdPartyFreight.Web/ThirdPartyFreight.Web.csproj]

This is a webassembly project, so not sure why it wont run when using a docker-compose vs just running it by docker run.

Any suggestions? I have try adding ENTRYPOINT but make no change.

Dockerfile

FROM mcr.microsoft.com/dotnet/sdk:8.0 AS build
ARG BUILD_CONFIGURATION=Release
WORKDIR /src

COPY src/ThirdPartyFreight.Web/ThirdPartyFreight.Web.csproj ThirdPartyFreight.Web/
COPY src/ThirdPartyFreight.Application/ThirdPartyFreight.Application.csproj ThirdPartyFreight.Application/
COPY src/ThirdPartyFreight.Domain/ThirdPartyFreight.Domain.csproj ThirdPartyFreight.Domain/
RUN dotnet restore ThirdPartyFreight.Web/ThirdPartyFreight.Web.csproj

COPY . .
WORKDIR "/src/ThirdPartyFreight.Web"
RUN dotnet build "ThirdPartyFreight.Web.csproj" -c $BUILD_CONFIGURATION -o /app/build

FROM build AS publish
ARG BUILD_CONFIGURATION=Release
RUN dotnet publish "ThirdPartyFreight.Web.csproj" -c $BUILD_CONFIGURATION -o /app/publish

FROM nginx:alpine AS final
WORKDIR /user/share/nginx/html
COPY --from=publish /app/publish/wwwroot .
COPY src/ThirdPartyFreight.Web/nginx.conf /etc/nginx/nginx.conf
EXPOSE 80
CMD ["nginx", "-g", "daemon off;"]

docker compose

services:
  thirdpartyfreight.api:
    image: ${DOCKER_REGISTRY-}thirdpartyfreightapi
    container_name: ThirdPartyFreight.Api
    build:
      context: .
      dockerfile: src/ThirdPartyFreight.Api/Dockerfile
    ports:
        - "28080:8080"
        - "28081:8081"
  csdtpfblazorwebapp-db:
    image: mcr.microsoft.com/mssql/server:2022-latest
    container_name: CSDTPFBlazorWebApp.Db
    environment:
      SA_PASSWORD: "SuperHardPassword!!"
      ACCEPT_EULA: "Y"
    ports:
        - "1433:1433"
    volumes:
        -  ./.containers/database:/var/opt/mssql/data
  csdtpfblazorwebapp-idp:
    image: quay.io/keycloak/keycloak:latest
    container_name: CSDTPFBlazorWebApp.Identity
    environment:
        - KEYCLOAK_ADMIN=admin
        - KEYCLOAK_ADMIN_PASSWORD=admin
    command:
        - start-dev
    ports:
        - "18080:8080"
  csdtpfblazorwebapp-seq:
    image: datalust/seq:latest
    container_name: CSDTPFBlazorWebApp.Seq
    environment:
        - ACCEPT_EULA=Y
    ports:
        - "5341:5341"
        - "8081:80"
  csdtpfblazorwebapp-redis:
    image: redis:latest
    container_name: CSDTPFBlazorWebApp.Redis
    ports:
        - "6379:6379"
  elsa-studio:
    image: elsaworkflows/elsa-studio-v3:latest
    container_name: elsa-studio
    environment:
      - HTTP_PORTS=8080
      - ELSASERVER__URL=https://localhost:5001/elsa/api
    ports:
      - "14000:8080"
  thirdpartyfreight.web:
    container_name: ThirdPartyFreight.Web
    build:
      context: .
      dockerfile: src/ThirdPartyFreight.Web/Dockerfile
    ports:
      - "28080:80"
2

You don’t run Dockerfile. You run docker build and use a Dockerfile to build an image. Docker compose just uses the same api to build, but it is not clear where you have the problem. At build time or runtime? This is why I ask:

docker run runs the container from an already built image. Docker compose can trigger the build process and runs the containers after that. I assume it happens at build time as the error refers to src.