I am trying to containerise a .NET framework 2.0 legacy application connecting to SQL Server on host outside the Docker, I am able to containerise the application, I can see the login page but when it tries to connect to SQL Server it gives error.

The type initialiser for 'class' threw an exception

Earlier I thought docker is unable to connect to host SQL Server but when I looked at the application logs inside docker, I found it has to do something with machine keys invalidation.

The error which I see in application log is:

Event code: 4005
Event message: Forms authentication failed for the request. Reason: The ticket supplied was invalid.
Event time: 29/07/2024 17:02:30
Event time (UTC): 29/07/2024 16:02:30
Event ID: 35ad1e99c62b4667b240c19a0c3e945f
Event sequence: 2
Event occurrence: 1
Event detail code: 50201

Application information:
    Application domain: /LM/W3SVC/1/ROOT-1-133667425492016462
    Trust level: Full
    Application Virtual Path: /
    Application Path: C:inetpubwwwroot
    Machine name: EC7A5C0027E8

Process information:
    Process ID: 2624
    Process name: w3wp.exe
    Account name: IIS APPPOOLDefaultAppPool

Request information:
    Request URL: http://localhost/default.aspx
    Request path: /default.aspx
    User host address: 192.168.1.21
    User:
    Is authenticated: False
    Authentication Type:
    Thread account name: IIS APPPOOLDefaultAppPool

Name to authenticate:

Custom event details: