Using Docker to supercharge .NET development on Linux

Alistair Chapman

@agc93

Docker

+ .NET Core

+ Linux

= 🎉

🐋

🤖

🐧

AGENDA

Introduction
Building with Docker
Building for Docker
Being a magpie developer 101

Thanks @thepracticaldev!

Introduction

Alistair Chapman

agc93

A Note on Moving Targets

1.1

2.0 Preview

Docker

Process and environment isolation
Supported on Linux, Windows (mostly) and macOS (sort of)
Currently undergoing a minor identity crisis

.NET Core

The next generation of the .NET platform
Supported on Windows, macOS (mostly) and Linux (sort of)
Currently undergoing a minor identity crisis

.NET Core on Linux

The bare essentials

Adding Docker to the Mix

Use a Dockerfile to build an image
You can then run your image to run your app in a container
Your base image decides the environment

FROM microsoft/dotnet:1.1.2-sdk

COPY . /app

WORKDIR /app

RUN ["dotnet", "restore"]

RUN ["dotnet", "build"]

EXPOSE 5000/tcp

CMD ["dotnet", "run", "--server.urls", "http://*:5000"]

Adding Docker to the Mix

Dockerifying a basic .NET app

Building with Docker

Using Containers for .NET Builds and tests

Building With Docker

Docker containers provide:
- Isolation
- "Clean" environment
- Deterministic builds
Containers won't provide:
- "Real-world" usage
- Security for untrusted code*
- Compatibility guarantees

Building FOR Docker

Doing What The Cool Kids Do

Building Cloud-Native Apps in Containers

Building FOR Docker

Requires a new approach to architecture
- Loose coupling
- Isolation and autonomy
- Stateless
- Discovery and composability
Best gains from apps designed as "cloud-native"
Extremely well-suited to microservices

Building FOR Docker

Where to next?

Try it out for yourself
Check out Windows Containers
Develop further with schedulers
Host on your platform of choice

Alistair Chapman

@agc93

(essentially everywhere)

https://blog.agchapman.com/

https://github.com/agc93/