How I can Dockerize my web api on windows - windows

Question

Docker is a full development platform for creating containerized apps, and Docker for Windows is the best way to get started with Docker on Windows systems.
Start your favorite shell (cmd.exe, PowerShell, or other) to check your versions of docker and docker-compose, and verify the installation.
PS C:\Users\Docker> docker --version
Docker version 17.03.0-ce, build 60ccb22
PS C:\Users\Docker> docker-compose --version
docker-compose version 1.11.2, build dfed245

Answer 1

Your questions is not very specific but it appears that you are trying to containerize an asp.net web app, Here is a basic clue to what you want to accomplish by using docker.
Docker is a linux containers system means it's based on linux kernel and by installing docker in windows you are installing a linux guest machine to built your containers in and you will customize your containers to forward ports that will serve your app development from inside the container to your host machine, So basically How this is going to happen? after installing docker first docker needs a base image(linux image) to run your containers from, so a great place to find docker images is docker hub, so also for a basic scenario you need:
1) Pull an image.
2) Run a container based on this image.
To accomplish number 1: we will use microsoft dotnet official docker hub as an example.
docker pull microsoft/aspnetcore
docker pull: will pull the dotnet:latest image from docker hub, :latest is a tag specify the latest stable release of dotnet means if you want another runtime version you will use docker pull dotnet:runtime from the above dotnet official docker hub link you will find tags under Supported tags
To accomplish number 2: we need to run a container by using this image.
docker run -d -p 8000:80 --name firstwebapptest microsoft/aspnetcore
docker run: will create a container name firstwebapptest based on microsoft/aspnetcore forwarding the container port 80to the host port 8000 and all of that will run as a detached mode -d
And now check your browser localhost:8000
This is a very basic scenario using the docker command line tools.
So another way to accomplish this scenario is by using a dockerfile you will find How to use this image in microsoft dotnet official docker hub link, It assumes that you already in your app directory that contain your compiled myapp.dll. What will you do is create a file called dockerfile in this directory and write this inside:
FROM microsoft/aspnetcore
WORKDIR /app
COPY . .
ENTRYPOINT ["dotnet", "myapp.dll"]
FROM: base image that we already pulled
WORKDIR: that will be the directory inside the linux container
COPY: . . the first . is copying your host directory content inside the container the second . is your guest directory in that case will be /app
ENTREYPOINT: is the linux command that will run once this container is up and running in that case dotnet myapp.dll means you are running the command dotnet from the linux container inside the WORKDIR /app with all your host directory app structure that contains your compiled myapp.dll. that we already copied it COPY . .
so now we have the dockerfile all what we need is to build and run it.
docker build -t secondwebapptest .
docker run -d -p 8001:80 secondwebapptest
docker build: will build a container named -t secondwebapptest from . the dot refer to the dockerfile that you just built and that you are already in the working directory otherwise you have to specify a path to the docker file by using -f but that is not our case.
docker run: will run the container that already been created that named secondwebapptest based on forwarding the container port 80to the host port 8001 and all of that will run as a detached mode -d.
And now check your browser localhost:8001