chore: Remove Sonar findings

src/Testcontainers/Builders/ContainerBuilder`3.cs

@@ -329,7 +329,7 @@ public TBuilderEntity WithResourceMapping(Uri source, DirectoryPath target, uint
       var fileName = Path.GetFileName(source.LocalPath);
 
       _ = Guard.Argument(source, nameof(source))
-        .ThrowIf(_ => string.IsNullOrEmpty(fileName), _ => new ArgumentException(string.Format(message, source), nameof(source)));
+        .ThrowIf(_ => string.IsNullOrEmpty(fileName), argument => new ArgumentException(string.Format(message, argument.Value), argument.Name));
 
       var filePath = FilePath.Of(Path.Combine(target.Value, fileName));
       return WithResourceMapping(source, filePath, uid, gid, fileMode);

src/Testcontainers/Builders/DirectoryPath.cs

@@ -52,4 +52,4 @@ public override string ToString()
       return Value;
     }
   }
-}
+}

src/Testcontainers/Builders/DockerConfig.cs

@@ -96,7 +96,14 @@ public Uri GetCurrentEndpoint()
 
       using (var sha256 = SHA256.Create())
       {
-        var dockerContextHash = BitConverter.ToString(sha256.ComputeHash(Encoding.Default.GetBytes(dockerContext))).Replace("-", string.Empty).ToLowerInvariant();
+        var hashBytes = sha256.ComputeHash(Encoding.Default.GetBytes(dockerContext));
+
+#if NET10_0_OR_GREATER
+        var dockerContextHash = Convert.ToHexStringLower(hashBytes);
+#else
+        var dockerContextHash = BitConverter.ToString(hashBytes).Replace("-", string.Empty).ToLowerInvariant();
+#endif
+
         var metaFilePath = Path.Combine(_dockerConfigDirectoryPath, "contexts", "meta", dockerContextHash, "meta.json");
 
         try

src/Testcontainers/Builders/FilePath.cs

@@ -52,4 +52,4 @@ public override string ToString()
       return Value;
     }
   }
-}
+}

src/Testcontainers/Configurations/WaitStrategies/UntilDatabaseIsAvailable.cs

@@ -5,7 +5,7 @@ namespace DotNet.Testcontainers.Configurations
   using System.Threading.Tasks;
   using DotNet.Testcontainers.Containers;
 
-  internal class UntilDatabaseIsAvailable : IWaitUntil
+  internal sealed class UntilDatabaseIsAvailable : IWaitUntil
   {
     private readonly DbProviderFactory _dbProviderFactory;
 
@@ -45,7 +45,12 @@ await connection.OpenAsync()
       }
       finally
       {
+#if NETSTANDARD2_0
         connection.Dispose();
+#else
+        await connection.DisposeAsync()
+          .ConfigureAwait(false);
+#endif
       }
     }
   }