add dependency map

src/Microsoft.Tye.Core/ConfigModel/ConfigService.cs

@@ -46,5 +46,7 @@ namespace Microsoft.Tye.ConfigModel
         public string? Version { get; set; }
         public string? Architecture { get; set; }
         public string? CloneDirectory { get; internal set; }
+        
+        public List<string> DependsOn { get; set; } = new List<string>();
     }
 }

src/Microsoft.Tye.Core/DockerCompose/DockerComposeParser.cs

@@ -273,6 +273,8 @@ namespace Tye.DockerCompose
                         break;
                     case "tty":
                         break;
+                    case "dependsOn":
+                        break;
                     default:
                         throw new TyeYamlException(child.Key.Start, CoreStrings.FormatUnrecognizedKey(key));
                 }

src/Microsoft.Tye.Core/Serialization/ConfigServiceParser.cs

@@ -164,6 +164,13 @@ namespace Tye.Serialization
                     case "cloneDirectory":
                         service.CloneDirectory = YamlParser.GetScalarValue(key, child.Value);
                         break;
+                    case "dependsOn":
+                        if (child.Value.NodeType != YamlNodeType.Sequence)
+                        {
+                            throw new TyeYamlException(child.Value.Start, CoreStrings.FormatExpectedYamlSequence(key));
+                        }
+                        HandleDependencies((child.Value as YamlSequenceNode)!, service.DependsOn);
+                        break;
                     default:
                         throw new TyeYamlException(child.Key.Start, CoreStrings.FormatUnrecognizedKey(key));
                 }
@@ -578,6 +585,15 @@ namespace Tye.Serialization
                 tags.Add(tag);
             }
         }
+        
+        private static void HandleDependencies(YamlSequenceNode yamlSequenceNode, List<string> dependencies)
+        {
+            foreach (var child in yamlSequenceNode!.Children)
+            {
+                var dependsOn = YamlParser.GetScalarValue(child);
+                dependencies.Add(dependsOn);
+            }
+        }
 
         private static void HandleServiceBindingRoutes(YamlSequenceNode yamlSequenceNode, List<string> routes)
         {