fix(parsing): support map form of depends_on with condition syntax

Sources/Container-Compose/Codable Structs/Service.swift

@@ -192,8 +192,14 @@ public struct Service: Codable, Hashable {
 
         if let dependsOnString = try? container.decodeIfPresent(String.self, forKey: .depends_on) {
             depends_on = [dependsOnString]
+        } else if let dependsOnArray = try? container.decodeIfPresent([String].self, forKey: .depends_on) {
+            depends_on = dependsOnArray
+        } else if let dependsOnMap = try? container.decodeIfPresent([String: [String: String]].self, forKey: .depends_on) {
+            // Map form: depends_on: { db: { condition: service_healthy } }
+            // Preserve dependency order; conditions are not applicable to Apple Container.
+            depends_on = dependsOnMap.keys.sorted()
         } else {
-            depends_on = try container.decodeIfPresent([String].self, forKey: .depends_on)
+            depends_on = nil
         }
         user = try container.decodeIfPresent(String.self, forKey: .user)
 

Tests/Container-Compose-StaticTests/DockerComposeParsingTests.swift

@@ -180,6 +180,32 @@ struct DockerComposeParsingTests {
         #expect(compose.services["web"]??.depends_on?.contains("db") == true)
     }
 
+    @Test("Parse compose with depends_on map form (condition syntax)")
+    func parseComposeWithDependenciesMapForm() throws {
+        let yaml = """
+        version: '3.8'
+        services:
+          web:
+            image: nginx:latest
+            depends_on:
+              db:
+                condition: service_healthy
+              cache:
+                condition: service_started
+          db:
+            image: postgres:14
+          cache:
+            image: redis:7
+        """
+
+        let decoder = YAMLDecoder()
+        let compose = try decoder.decode(DockerCompose.self, from: yaml)
+
+        #expect(compose.services["web"]??.depends_on?.contains("db") == true)
+        #expect(compose.services["web"]??.depends_on?.contains("cache") == true)
+        #expect(compose.services["web"]??.depends_on?.count == 2)
+    }
+
     @Test("Parse compose with build context")
     func parseComposeWithBuild() throws {
         let yaml = """