feat: Support digest in IImage, DockerImage and in the `WithImage…

…(string)` implementation (#1249)

Co-authored-by: Andre Hofmeister <9199345+HofmeisterAn@users.noreply.github.com>

src/Testcontainers/Builders/DockerConfig.cs

@@ -1,4 +1,4 @@
-namespace DotNet.Testcontainers.Builders
+namespace DotNet.Testcontainers.Builders
 {
   using System;
   using System.IO;

src/Testcontainers/Builders/SourceGenerationContext.cs

@@ -1,4 +1,4 @@
-namespace DotNet.Testcontainers.Builders
+namespace DotNet.Testcontainers.Builders
 {
   using System.Text.Json.Serialization;
 

src/Testcontainers/Clients/DockerImageOperations.cs

@@ -59,8 +59,7 @@ public async Task CreateAsync(IImage image, IDockerRegistryAuthenticationConfigu
     {
       var createParameters = new ImagesCreateParameters
       {
-        FromImage = image.FullName.Replace(":" + image.Tag, string.Empty), // Workaround until https://github.com/dotnet/Docker.DotNet/issues/595 is fixed.
-        Tag = image.Tag,
+        FromImage = image.FullName
       };
 
       var authConfig = new AuthConfig

src/Testcontainers/Images/DockerImage.cs

@@ -1,4 +1,4 @@
-namespace DotNet.Testcontainers.Images
+namespace DotNet.Testcontainers.Images
 {
   using System;
   using System.Globalization;
@@ -117,7 +117,16 @@ public DockerImage(
     public string Digest => _digit;
 
     /// <inheritdoc />
-    public string FullName => $"{Registry}/{Repository}:{Tag}".Trim(TrimChars);
+    public string FullName
+    {
+      get
+      {
+        var registry = string.IsNullOrEmpty(Registry) ? string.Empty : $"{Registry}/";
+        var tag = string.IsNullOrEmpty(Tag) ? string.Empty : $":{Tag}";
+        var digest = string.IsNullOrEmpty(Digest) ? string.Empty : $"@{Digest}";
+        return $"{registry}{Repository}{tag}{digest}";
+      }
+    }
 
     /// <inheritdoc />
     [Obsolete("We will remove this property, it does not follow the DSL. Use the 'Repository' property instead.")]

tests/Testcontainers.Tests/Unit/Containers/Unix/TestcontainersContainerTest.cs

@@ -535,6 +535,23 @@ await container.StartAsync()
         Assert.EndsWith(name, container.Name);
       }
 
+      [Fact]
+      public async Task PullDigest()
+      {
+        // Given
+        await using var container = new ContainerBuilder()
+          .WithImage("alpine@sha256:3451da08fc6ef554a100da3e2df5ac6d598c82f2a774d5f6ed465c3d80cd163a")
+          .WithEntrypoint(CommonCommands.SleepInfinity)
+          .Build();
+
+        // When
+        var exception = await Record.ExceptionAsync(() => container.StartAsync())
+          .ConfigureAwait(true);
+
+        // Then
+        Assert.Null(exception);
+      }
+
       [Fact]
       public async Task PullPolicyNever()
       {

tests/Testcontainers.Tests/Unit/Images/TestcontainersImageTest.cs

@@ -52,7 +52,7 @@ public void ShouldNotThrowArgumentExceptionIfImageTagHasUppercaseCharacters(stri
 
     [Theory]
     [ClassData(typeof(DockerImageFixture))]
-    public void WhenImageNameGetsAssigned(DockerImageFixtureSerializable serializable, string image, string _)
+    public void WhenImageNameGetsAssigned(DockerImageFixtureSerializable serializable, string image, string fullName)
     {
       // Given
       var expected = serializable.Image;
@@ -67,7 +67,7 @@ public void WhenImageNameGetsAssigned(DockerImageFixtureSerializable serializabl
       Assert.Equal(expected.Digest, actual.Digest);
       Assert.Equal(expected.FullName, actual.FullName);
       Assert.Equal(expected.Name, actual.Name);
-      // Assert.Equal(fullName, actual.FullName);
+      Assert.Equal(fullName, actual.FullName);
     }
 
     [Fact]