Always use focal image per #1137

Author: Chuxel

containers/dotnet-mssql/.devcontainer/Dockerfile

@@ -1,6 +1,6 @@
-# [Choice] .NET version: 6.0, 5.0, 3.1, 6.0-bullseye, 5.0-bullseye, 3.1-bullseye, 6.0-focal, 5.0-focal, 3.1-focal
-ARG VARIANT=5.0-bullseye
-FROM mcr.microsoft.com/vscode/devcontainers/dotnet:${VARIANT}
+# [Choice] .NET version: 6.0, 5.0, 3.1
+ARG VARIANT=6.0
+FROM mcr.microsoft.com/vscode/devcontainers/dotnet:${VARIANT}-focal
 
 # [Choice] Node.js version: none, lts/*, 16, 14, 12, 10
 ARG NODE_VERSION="none"

containers/dotnet-mssql/.devcontainer/docker-compose.yml

@@ -7,8 +7,7 @@ services:
       dockerfile: Dockerfile
       args:
         # Update 'VARIANT' to pick a version of .NET: 3.1, 5.0, 6.0
-        # Append -bullseye or -focal to pin to an OS version.
-        VARIANT: 5.0-focal
+        VARIANT: 6.0
         # Optional version of Node.js
         NODE_VERSION: "lts/*"
 

containers/dotnet-mssql/README.md

@@ -10,14 +10,14 @@
 | *Categories* | Core, Languages |
 | *Definition type* | Docker Compose |
 | *Published image architecture(s)* | x86-64 |
-| *Available image variants* | [See .NET definition](../dotnet). |
+| *Available image variants* | 3.1, 5.0, 6.0 |
 | *Works in Codespaces* | Yes |
 | *Container host OS support* | Linux, macOS, Windows |
-| *Container OS* | Ubuntu (.NET 3.1-6.0), Debian (.NET 6.0 default) |
+| *Container OS* | Ubuntu (Debian .NET 6.0 image variant not yet supported) |
 | *Languages, platforms* | .NET, .NET Core, C#, Microsoft SQL |
 
 ## Description
-This definition creates two containers, one for C# (.NET) and one for Microsoft SQL.  VS Code will attach to the .NET Core container, and from within that container the Microsoft SQL container will be available on **`localhost`** port 1433. By default, the `sa` user password is `P@ssw0rd`. For more on the configuration of MS SQL, see the section [MS SQL Configuration](#MS-SQL-Configuration)
+This definition creates two containers, one for C# (.NET) and one for Microsoft SQL. VS Code will attach to the .NET Core container, and from within that container the Microsoft SQL container will be available on **`localhost`** port 1433. By default, the `sa` user password is `P@ssw0rd`. For more on the configuration of MS SQL, see the section [MS SQL Configuration](#MS-SQL-Configuration)
 
 ## Using this definition
 
@@ -28,6 +28,8 @@ args:
   VARIANT: "3.1"
 ```
 
+This will currently always use an Ubuntu 20.04/focal based .NET image since there is not yet a Debian 11/Bullseye ODBC driver.
+
 ### Debug Configuration
 
 Only the integrated terminal is supported by the Remote - Containers extension. You may need to modify your `.vscode/launch.json` configurations to include the following: