Visual studio runs docker with a lot of command line arguments when building/running. So hitting run in debug and release mode starts up the container with no issues.
How do I make the docker file have all the mounts and environment variables so I dont have to provide any of those when publishing the container to a container registry/repo?
My docker file looks like:
#See https://aka.ms/containerfastmode to understand how Visual Studio uses this Dockerfile to build your images for faster debugging. FROM mcr.microsoft.com/dotnet/aspnet:5.0-buster-slim AS base WORKDIR /app EXPOSE 80 EXPOSE 443 FROM mcr.microsoft.com/dotnet/sdk:5.0-buster-slim AS build WORKDIR /src COPY ["Service/Service.csproj", "Service/"] COPY ["DataLayer/DataLayer.csproj", "DataLayer/"] RUN dotnet restore "Service/Service.csproj" COPY . . WORKDIR "/src/Service" RUN dotnet build "Service.csproj" -c Release -o /app/build FROM build AS publish RUN dotnet publish "Service.csproj" -c Release -o /app/publish FROM base AS final WORKDIR /app COPY --from=publish /app/publish . ENTRYPOINT ["dotnet", "Service.dll"]
On pressing Run docker in visual studio, it starts up the image with the following commands:
Here you can see all the cmd options visual studio provides to run the container
docker build -f "C:UsersJacobsourcereposServiceDockerfile" --force-rm -t service --label "com.microsoft.created-by=visual-studio" --label "com.microsoft.visual-studio.project-name=Service" "C:UsersJacobsourcereposService"
docker run -dt -v "C:UsersJacobvsdbgvs2017u5:/remote_debugger:rw" -v "C:UsersJacobAppDataRoamingMicrosoftUserSecrets:/root/.microsoft/usersecrets:ro" -v "C:UsersJacobAppDataRoamingASP.NETHttps:/root/.aspnet/https:ro" -e "ASPNETCORE_URLS=https://+:443;http://+:80" -e "ASPNETCORE_HTTPS_PORT=443" -e "ASPNETCORE_ENVIRONMENT=Development" -e "ASPNETCORE_LOGGING__CONSOLE__DISABLECOLORS=true" -p 80:80 -p 443:443 -P --name Service --entrypoint tail service -f /dev/null
When I just host my container somewhere without all these cmd line options, it does not get all the mounts and command line arguments to function. I assume that all of those have to be included in my dockerfile when publishing? So how do I go about setting all those up?
For reference, this is the information provided by docker hub on inspecting the container:
Environment ASPNETCORE_URLS https://+:443;http://+:80 ASPNETCORE_HTTPS_PORT 443 ASPNETCORE_ENVIRONMENT Development ASPNETCORE_LOGGING__CONSOLE__DISABLECOLORS true PATH /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin DOTNET_RUNNING_IN_CONTAINER true DOTNET_VERSION 5.0.2 ASPNET_VERSION 5.0.2 Mounts /REMOTE_DEBUGGER C:UsersJacobvsdbgvs2017u5 /ROOT/.MICROSOFT/USERSECRETS C:UsersJacobAppDataRoamingMicrosoftUserSecrets /ROOT/.ASPNET/HTTPS C:UsersJacobAppDataRoamingASP.NETHttps Ports 443/tcp localhost:443 80/tcp localhost:80
But when I run a the published docker image on my own:
Environment PATH /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin ASPNETCORE_URLS http://+:80 DOTNET_RUNNING_IN_CONTAINER true DOTNET_VERSION 5.0.2 ASPNET_VERSION 5.0.2 Ports 443/tcp localhost:443 80/tcp localhost:80
Answers:
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Method 1
Afaik, volumes can only be mounted when starting a container. So this can be either using docker run -v option or in a docker compose file. Volumes cannot be defined in a docker file.
Environment variables can defined in docker file using ENV instruction and/or with docker run command.
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