Add docker execution environment

RemoteExec.Server/Configuration/ExecutionConfiguration.cs

@@ -14,6 +14,45 @@ public class ExecutionConfiguration
 
     /// <summary>
     /// Type of execution environment to use. Default is "AssemblyLoadContext".
+    /// Options: "AssemblyLoadContext", "DockerContainer"
     /// </summary>
     public string ExecutionEnvironment { get; set; } = "AssemblyLoadContext";
+}
+
+public class DockerExecutionConfiguration
+{
+    /// <summary>
+    /// Docker host URL. Default is unix:///var/run/docker.sock (Linux) or npipe://./pipe/docker_engine (Windows).
+    /// </summary>
+    public string DockerHost { get; set; } = string.Empty;
+
+    /// <summary>
+    /// Docker worker image name. Default is remoteexec-worker:latest.
+    /// </summary>
+    public string WorkerImageName { get; set; } = "remoteexec-worker:latest";
+
+    /// <summary>
+    /// Container timeout in seconds. Default is 300 (5 minutes).
+    /// </summary>
+    public int ContainerTimeoutSeconds { get; set; } = 300;
+
+    /// <summary>
+    /// Memory limit per container in MB. Default is 512 MB.
+    /// </summary>
+    public long ContainerMemoryLimitMb { get; set; } = 512;
+
+    /// <summary>
+    /// CPU shares per container. Default is 1024.
+    /// </summary>
+    public long ContainerCpuShares { get; set; } = 1024;
+
+    /// <summary>
+    /// Disable network access in containers. Default is true.
+    /// </summary>
+    public bool DisableNetwork { get; set; } = true;
+
+    /// <summary>
+    /// Use read-only filesystem in containers. Default is true.
+    /// </summary>
+    public bool ReadOnlyFilesystem { get; set; } = true;
 }