This document summarizes the modernization of a legacy .NET application at Fox MediaCloud using Docker Enterprise Edition (EE). The traditional Broadcast Affiliate Portal application was containerized and deployed to Azure in just 3 days. This reduced deployment time from 3 weeks to minutes and enabled redundancy and disaster recovery without downtime for security fixes or scaling. The migration demonstrated how Docker EE can help enterprises modernize applications at their own pace while controlling costs and driving innovation incrementally across their application portfolios.

1. Back to the Future:
Modernizing
Legacy Apps
Brandon
Royal
Solution Architect | Docker, Inc.

2. App A
● manual/inconsistent
deployment process
● 1 deployment / month
● 1-3 weeks to scale
● business critical

3. App B
● automated and
cryptographically signed
deployment process
● 3 deployments / week
● minutes to scale
● business critical

4. Modernized
Traditional
App
Traditional
App
Same App
.NET
App
.NET
App

5. Deployed to
Docker EE
in Azure
in 3 Days

6. PoC to Prod
● Traditional SAP App
● Modernized with
Docker EE
● Running at high
scale in production

8. Challenges for Enterprise Apps
● Need to look at incremental innovation across entire app
portfolio
○ Hundreds of apps
○ Years of development per app
● Sunset and rewrite is possible with a small subset of apps
● Balance driving innovation while controlling cost

9. Modernize Traditional Apps (MTA) with Docker
● Containerize with Docker EE
● Leverage modern properties from your
traditional applications without rewriting them
● Use container based supply chain to innovate
apps incrementally
● Accelerate container adoption across app
portfolio

10. Modernizing Apps
app investment over time
v
a
l
u
e
Other
Platforms
Docker

11. Innovate at
your Pace
MTA Journey
PoC
First apps in
Prod
Production at
Scale

12. Getting Started with MTA
● 30 days total
● 3-5 days onsite
● 1-3 apps
App

13. Assess Containerize Deploy Measure
● Infrastructure
● App
● Containerize
● Configure
● Compose
● Docker EE ● Functional
● Performance
● Operational

14. Architecture
Runtime
Dependencies
Implementation
Assess Containerize Deploy Measure
4 Categories

15. Architecture
Runtime
Dependencies
Implementation
● Narrow down to 1-3 target applications
● Containerize-able in 2-3 days of work
● Representative of other enterprise app
● Aligned with existing initiatives
● Technical resources available by app
Assess Containerize Deploy Measure
General Guidance

16. Limits of Legacy
Containerization

17. Architecture
Runtime
Dependencies
Implementation
● .NET Fx or Java EE
● 2-3 tiers architecture
● 1-5 runtime components
● Manageable / known
dependencies
Assess Containerize Deploy Measure

18. Architecture
Runtime
Dependencies
Implementation
● IIS 6-8, Tomcat, WebLogic,
WebSphere, JBoss
● .NET Framework 2.0 or later
Assess Containerize Deploy Measure

19. Architecture
Runtime
Dependencies
Implementation
● Availability of application
artifacts + expertise
● Databases out of scope for
containerization
● Consider database and user
authentication
Assess Containerize Deploy Measure

20. Architecture
Runtime
Dependencies
Implementation
● No hardcoded IPs or
hostnames
● Application startup time
time < ~5mins
● Deployment artifacts
support unattended
installation
Assess Containerize Deploy Measure

21. MTA PoC Toolkit
App Assessment Guides
Available through select MTA accredited
Docker partners

22. Infrastructure
Standard
Includes
Additional
Tools
Windows
+
Linux
Assess Containerize Deploy Measure

23. Infrastructure
Assess Containerize Deploy Measure

24. Containerize
App Artifacts
FROM tomcat:7.0.82-jre8
Select Base Image
COPY myapp.war /opt/tomcat/webapps
COPY bootstrap.sh /bootstrap.sh
Copy App Artifacts
RUN [“sh”,“config_app_server.sh”]
ENTRYPOINT [“sh”,“bootstrap.sh”]
Configure App Server
Dockerfile
Assess Containerize Deploy Measure

25. Containerization Tooling
VM
App Server
App
App
Conversion Dockerfile
Assess Containerize Deploy Measure

26. FROM microsoft/aspnet:windowsservercore-10.0.14393.1066
SHELL ["powershell", "-Command", "$ErrorActionPreference = 'Stop';
$ProgressPreference = 'SilentlyContinue';"]
# disable DNS cache so container addresses always fetched from Docker
RUN Set-ItemProperty -path
'HKLM:SYSTEMCurrentControlSetServicesDnscacheParameters' -Name
ServerPriorityTimeLimit -Value 0 -Type DWord
RUN Remove-Website 'Default Web Site';
RUN Enable-WindowsOptionalFeature -Online -FeatureName
IIS-ApplicationDevelopment,IIS-ASPNET45,IIS-BasicAuthentication,IIS-CommonHttpFeature
s,IIS-DefaultDocument,IIS-DirectoryBrowsing,IIS-HealthAndDiagnostics,IIS-HttpCompress
ionStatic,IIS-HttpErrors,IIS-HttpLogging,IIS-ISAPIExtensions,IIS-ISAPIFilter,IIS-NetF
xExtensibility45,IIS-Performance,IIS-RequestFiltering,IIS-Security,IIS-StaticContent,
IIS-WebServer,IIS-WebServerRole,NetFx4Extended-ASPNET45
Image2Docker - ASP.NET

27. Accelerating MTA Deployments
Version Control
Build images Integration
Docker Trusted Registry
Docker Universal Control Plane
Build Service
1. Commit app (compiled assets),
Dockerfiles and compose files to
Source Control
2. Build Service builds Docker
Images
3. Build Service pushes image to
Docker Trusted Registry (DTR)
4. Build Service deploys/updates
Docker Stack on Universal
Control Plane (UCP) cluster
Assess Containerize Deploy Measure

28. MTA CI/CD
Pre-wired and self-contained
● Docker Trusted Registry
● Docker Universal Control
Plane
● Gogs [git]
● Jenkins

29. MTA Results

30. Modernize Traditional
Applications at
Fox MediaCloud
Part of Fox Entertainment Group
Ghosted
Premiering Sunday, October 1

31. 1 Billion +
Subscribers
500 +
Channels
170 +
Countries
That Level Of Demand Means
Constant Innovation
● Speed to market
● Elasticity and reliability
● Improving CI/CD
Cloud is critical to success
moving forward.
Challenges to overcome
● A majority of budget goes towards
maintaining the status quo.
● Limited resources to port everything
quickly
● Architecture constraints

32. The quickest way to cut into that budget
App
Accomplishments in 3 Days
• Portability across multiple
infrastructures
• Reduce/Eliminate deployment
downtime
• Improve application density
• Embrace DevOps/CICD
• Baked in DR strategy
By Docker, Avanade, Microsoft
“MTA was the quickest way to cut into
that budget and accelerate our path to
the cloud”
Modernize Traditional Applications POC Program

33. The Broadcast Affiliate Portal App allows Fox affiliate
TV stations around the country to pick the
promotional content they would like to air.
App Details
FMC Portal Load Balancer
HTTP
HTTP
FMC Portal FMC Portal
FMC
Portal
DB
Okta &
other
services
Redis
● ASP.NET 3.5+ applications / MSSQL 2012
● 25% Max CPU Utilization on these
servers
● 2 vm’s running 5-6 IIS Apps
● Windows Server 2012
Challenges
● Deploying and maintaining this application
involves lots of manual process
● DR isn’t part of the overall structure, app just
gets rebuilt and redeployed. Downtime
required.
Broadcast Affiliate Portal

34. FMC Portal Load Balancer
Worker_0
10.X.X.2
Worker_1
10.X.X.3
Worker_2
10.X.X.4
FMC Portal
DB
We
b
Redis
Okta &
other
services
Load Balancer
Manager_0
10.X.X.5 UCP
DTR
Overlay
Network
HTTP
HTTP
HTTP
HTTP
HTTP
HTTP
App went from running on
prem on Windows Server 2012,
To fully containerized
application running in Azure
on Windows Server 2016
Microsoft Azure Microsoft Azure
Redis
We
b
Redis
We
b
Redis
Broadcast Affiliate Portal
Using Docker EE

35. MTA Results
FMC
Portal
Before After
• 3 weeks to get code
into production
• No app redundancy
or DR
• Security fixes are
resolved same day
but require downtime
• Time to Scale is 1+
weeks
Completed in 3 Days
• Deploy in minutes
• Built in redundancy
easily into
design/architecture
• Groundwork for CI/CD
built into the platform
• No downtime for
security fixes
• Time to Scale now takes
minutes

36. Want to learn more?
● Stop by the booth (MTA pod)
● Download the kit www.docker.com/mta
● Look for a MTA Roadshow near you
● Contact your Account Team

37. Docker EE
Hosted Demo
● Free 4 Hour Demo
● No Servers Required
● Full Docker EE
Cluster Access
docker.com/trial

38. Thank you!
@brandon_royal
#dockercon