Can't get my Docker Desktop c# web api environment running with docker-compose

I'm experimenting with Docker to get more familiar with the technology, and plan on experimenting with Kubernetes as well.

For my experiment, I made a .NET 6 web api project that creates a container app named "Holovacs.Kubernetes.Authentication.WebApi". It's literally a cookie-cutter sample web api project. I checked the box to create it as a container and this makes a Dockerfile:

FROM mcr.microsoft.com/dotnet/aspnet:6.0 AS base
WORKDIR /app
EXPOSE 80
FROM mcr.microsoft.com/dotnet/sdk:6.0 AS build
WORKDIR /src
COPY ["Holovacs.Kubernetes.Authentication.WebApi/Holovacs.Kubernetes.Authentication.WebApi.csproj", "Holovacs.Kubernetes.Authentication.WebApi/"]
RUN dotnet restore "Holovacs.Kubernetes.Authentication.WebApi/Holovacs.Kubernetes.Authentication.WebApi.csproj"
COPY . .
WORKDIR "/src/Holovacs.Kubernetes.Authentication.WebApi"
RUN dotnet build "Holovacs.Kubernetes.Authentication.WebApi.csproj" -c Release -o /app/build
FROM build AS publish
RUN dotnet publish "Holovacs.Kubernetes.Authentication.WebApi.csproj" -c Release -o /app/publish /p:UseAppHost=false
FROM base AS final
WORKDIR /app
COPY --from=publish /app/publish .
ENTRYPOINT ["dotnet", "Holovacs.Kubernetes.Authentication.WebApi.dll"]

I can run this thing in debug mode on Docker Desktop:

...and, hey! The Swagger page comes up, letting me know it's running as expected:

So next I build out my "development environment" using docker-compose. My docker-compose.yml file:

version: '3'
name: devenv
services:
authdbserver:
image: postgres:latest
restart: always
ports:
- 35432:5432
environment:
POSTGRES_DB: authdb
POSTGRES_USER: authsvcuser
POSTGRES_PASSWORD: X1Mz9YdFol0pw!t
appdbserver:
image: postgres:latest
restart: always
ports:
- 35433:5432
environment:
POSTGRES_DB: appdb
POSTGRES_USER: appsvcuser
POSTGRES_PASSWORD: vgm3UsjF0UYxaI
dbadmin:
image: dpage/pgadmin4:latest
restart: always
ports:
- 30080:80
links:
- authdbserver
- appdbserver
environment:
PGADMIN_DEFAULT_EMAIL: admin@admin.com
PGADMIN_DEFAULT_PASSWORD: secret
PGADMIN_LISTEN_PORT: 80
auditdb:
image: mongo:latest
restart: always
ports: 
- 37017:27017
environment:
MONGO_INITDB_ROOT_USERNAME: admin
MONGO_INITDB_ROOT_PASSWORD: secret
mongoadmin:
image: mongo-express:latest
restart: always
ports:
- 38081:8081
environment:
ME_CONFIG_MONGODB_ADMINUSERNAME: admin
ME_CONFIG_MONGODB_ADMINPASSWORD: secret
ME_CONFIG_MONGODB_URL: mongodb://admin:secret@auditdb:27017/   
hkauthsvc:
image: holovacskubernetesauthenticationwebapi:dev
restart: always
ports: 
- 30081:80
links:
- authdbserver
- appdbserver
- auditdb
environment:
AUTH_SVC_CONN: Server=authdbserver;Database=authdb;User Id=authsvcuser;Password=eX1Mz9YdFol0pw!t;
APP_SVC_CONN: Server=appdbserver;Database=appdb;User Id=appsvcuser;Password=vgm3UsjF0UYxaI;
rabbitmq:
image: rabbitmq:management
ports: 
- 35672:15672
environment:
RABBITMQ_DEFAULT_USER: admin@admin.com
RABBITMQ_DEFAULT_PASS: secret

...on the command line, I navigate to the folder I created this yml file in and run it:

docker-compose up
[+] Running 7/0
✔ Container devenv-appdbserver-1   Created                                                                        0.0s
✔ Container devenv-auditdb-1       Created                                                                        0.0s
✔ Container devenv-rabbitmq-1      Created                                                                        0.0s
✔ Container devenv-mongoadmin-1    Created                                                                        0.0s
✔ Container devenv-authdbserver-1  Created                                                                        0.0s
✔ Container devenv-dbadmin-1       Created                                                                        0.0s
✔ Container devenv-hkauthsvc-1     Created                                                                        0.0s
(lots of startup logs)
devenv-hkauthsvc-1 exited with code 0
devenv-hkauthsvc-1 exited with code 0
devenv-hkauthsvc-1 exited with code 0
devenv-hkauthsvc-1 exited with code 0 (this keeps repeating...)

Note the devenv-hkauthsvc-1 container keeps exiting. I can't keep it running, and it won't respond on port 30081. There are no associated logs with this. There don't appear to be any errors. It just runs, stops, and runs again.

I've seen some SO articles suggesting that I need to be listening to STDIN or set this interactive somehow... do I? That seems to be an odd limitation that I haven't had to do with literally any of these other containers. Have I misconfigured something? Is this a quirk of c#/ web-api, asp.net, microsoft? Am I doing something wrong, or making some incorrect assumptions? Please advise.

NOTE: for giggles, I tried to run this in Visual Studio in Release configuration, and changed my image to holovacskubernetesauthenticationwebapi:latest (not sure where the dev and latest tags are coming from) and used docker-compose up -d and now when I run the container, it doesn't seem to stop... there's even some logs for the .net container... but it's still not responding.

All right I figured this out. The dev version of the image does not play nice with the docker compose, I'm assuming because it's expecting a debugger to be attached to it. When I built the image as a release configuration, it no longer immediately exited... but calls to the endpoint were coming up blank. I thought something else was wrong, but it was actually fine; in Release config, the redirect to swagger (indeed, the entire swagger UI) is disabled by default. So it was actually working fine at that point, I just needed to hit a real endpoint. After all the headache I'd had with the other parts, I just assumed I'd screwed something else up.