Docker has the potential to revolutionize how we build, deliver, support and even design software. But it doesn't have to be a violent revolution. The end goal might be breaking your existing ASP.NET monolith into microservices which run cross-platform on .NET Core, but the first step can be as simple as packaging your whole .Net Framework application as-is into a Docker image and running it as a container. In this session, we'll take an existing ASP.NET WebForms application and package it as a Docker image, which can run in a container on Windows Server 2016 and Windows 10. We'll show you how to run the app and a SQL Server database in Docker containers on Windows, and how to use Docker Compose to define the structure of a distributed application. Then we'll iteratively add functionality to the app, making use of the Docker platform to modernize the monolith without a full rebuild. We'll take a feature-driven approach and show you how Docker makes it easy to address performance, usability and design issues.y and design issues.

1. Modernizing .NET Apps
@IrisClasson
Konstrukt
@EltonStoneman
Docker, Inc.

2. Agenda
Docker on Windows
Chat! – the Demo App
- Moving to Docker
- Running in the Cloud
- Running in Production
Modernizing .NET
Apps
- The Spectrum
- Next Steps

3. Docker on Windows

4. sqlservr.exe
dotnet.exe
w3wp.exe

5. But Why?
●Consistency
●Portability
●Isolation
●Size
●Startup-time
●Rollback
●ROI
●Tooling & YOU

6. 6

7. 7

10. FROM microsoft/aspnet:windowsservercore
COPY UpgradeSample-1.0.0.0.msi /
RUN msiexec /i c:UpgradeSample-1.0.0.0.msi RELEASENAME=2017.02 /qn

11. # escape=`
FROM microsoft/windowsservercore
SHELL ["powershell", "-Command"]
RUN Add-WindowsFeature Web-server, `
NET-Framework-45-ASPNET, Web-Asp-Net45; `
Remove-Website -Name 'Default Web Site'
COPY ProductLaunchWeb /product-launch-web
RUN New-Website -Name 'product-launch' `
-PhysicalPath 'C:product-launch-web' -Port 80
EXPOSE 80
COPY bootstrap.ps1 /
ENTRYPOINT ./bootstrap.ps1

13. Chat!
The Demo App

14. “hi!”
AuditDB

15. “hi!”
AuditDB
BackplaneDB

16. “hi!”
AuditDB
BackplaneDB

17. > demo

18. “hi!”
BackplaneDB
AuditDB
WAF

19. Next Steps

20. Migrate
as-is
Adopt
platform idioms
Adapt
to new runtime
Extract
key features
Rebuild
and renew
• Configuration
• Monitoring
• Logging
• Fault-tolerance
• Scaling
• Statelessness
• Peformance
• Functionality
• Fast updates
• Architecture
• Tech stack
• Paradigms
• Binaries
• Setup
• Artifacts

21. @EltonStonem
an
Thank you!
@ IrisClasson