Generating a C# library from swagger.json using Docker for Windows

Just a short reference for myself (and maybe for you). How to run Docker for Windows, mount a local file system drive inside of the container, grab the swagger.json file off of a URL, and generate a library:

Using swagger-codegen-cli (old):

docker run -it -v //c/temp/swagger:/local --network host --rm swaggerapi/swagger-codegen-cli generate -i "http://docker.for.win.localhost:5000/swagger/v1/swagger.json" -l csharp -o /local

Using openapi-generator-cli (new):

docker run -it -v //c/temp/swagger:/local --network host --rm openapitools/openapi-generator-cli generate -i "http://docker.for.win.localhost:5000/swagger/v1/swagger.json" -g csharp -o /local

In the examples, the generators connect to a webserver running on the local Windows host at port 5000, and outputs “csharp”. Change this as appropriate.

Oh, and another thing: To make NSwag generate the swagger.json correctly in a .Net project, the <GenerateDocumentationFile> property needs to be set.

<PropertyGroup>
    <TargetFramework>netcoreapp3.1</TargetFramework>
    <AspNetCoreHostingModel>InProcess</AspNetCoreHostingModel>
    <GenerateDocumentationFile>true</GenerateDocumentationFile>
</PropertyGroup>