added configuration flag

package.json

@@ -1015,6 +1015,21 @@
                                 "type": "boolean",
                                 "description": "%vscode-docker.tasks.docker-build.netCore.useSdkBuild%",
                                 "default": false
+                            },
+                            "configuration": {
+                                "anyOf": [
+                                    {
+                                        "type": "string"
+                                    },
+                                    {
+                                        "type": "string",
+                                        "enum": [
+                                            "Debug",
+                                            "Release"
+                                        ]
+                                    }
+                                ],
+                                "description": "%vscode-docker.tasks.docker-build.netCore.configuration%"
                             }
                         },
                         "required": [

package.nls.json

@@ -61,6 +61,7 @@
     "vscode-docker.tasks.docker-build.netCore.description": "Options for building .NET projects in Docker.",
     "vscode-docker.tasks.docker-build.netCore.appProject": "The .NET project (.csproj, .fsproj, etc.) to build.",
     "vscode-docker.tasks.docker-build.netCore.useSdkBuild": "Whether to use the .NET Core SDK to build the project.",
+    "vscode-docker.tasks.docker-build.netCore.configuration": "The configuration flag in .NET that modifies runtime behavior.",
     "vscode-docker.tasks.docker-build.node.description": "Options for building Node.js applications in Docker.",
     "vscode-docker.tasks.docker-build.node.package": "The path to the package.json for the application.",
     "vscode-docker.tasks.docker-build.python.description": "Options for building Python applications in Docker.",

src/tasks/netcore/NetCoreTaskHelper.ts

@@ -28,6 +28,7 @@ export interface NetCoreTaskOptions {
     configureSsl?: boolean;
     enableDebugging?: boolean;
     useSdkBuild?: boolean;
+    configuration?: string;
 }
 
 export interface NetCoreBuildTaskDefinition extends DockerBuildTaskDefinitionBase {
@@ -301,10 +302,11 @@ export class NetCoreTaskHelper extends TaskHelper {
      * @see {@link https://learn.microsoft.com/en-us/dotnet/core/docker/publish-as-container} for further information
      */
     private async buildWithDotnetSdk(context: DockerBuildTaskContext, buildDefinition: DockerBuildTaskDefinition): Promise<void> {
+        const configuration = buildDefinition.netCore?.configuration ? `-c ${buildDefinition.netCore?.configuration} ` : '';
         const publishFlag = NetCoreTaskHelper.isWebApp ? '-p:PublishProfile=DefaultContainer' : '/t:PublishContainer';
         const [runtimeOs, runtimeArch] = this.getOsAndArch(buildDefinition);
         const imageNameInfo = parseDockerLikeImageName(buildDefinition.dockerBuild.tag);
-        const sdkBuildCommand = `dotnet publish --os ${runtimeOs} --arch ${runtimeArch} ${publishFlag} -c Debug -p:ContainerImageName=${imageNameInfo.image} -p:ContainerImageTag=${imageNameInfo.tag}`;
+        const sdkBuildCommand = `dotnet publish --os ${runtimeOs} --arch ${runtimeArch} ${publishFlag} ${configuration}-p:ContainerImageName=${imageNameInfo.image} -p:ContainerImageTag=${imageNameInfo.tag}`;
         await context.terminal.execAsyncInTerminal(
             sdkBuildCommand,
             {