Support Docker Desktop paths for Linux and Mac (#7058)

Docker provides additional paths to support Docker Desktop.

* Linux: ~/.docker/desktop/docker.sock
* MacOS: ~/.docker/run/docker.sock

Also, `ryuk` should use `/var/run/docker.sock`.
---------

Co-authored-by: Kevin Wittek <kiview@users.noreply.github.com>

core/src/main/java/org/testcontainers/DockerClientFactory.java

@@ -164,6 +164,9 @@ public String getRemoteDockerUnixSocketPath() {
                 return dockerSocketOverride;
             }
         }
+        if (this.strategy != null && this.strategy.getRemoteDockerUnixSocketPath() != null) {
+            return this.strategy.getRemoteDockerUnixSocketPath();
+        }
 
         URI dockerHost = getTransportConfig().getDockerHost();
         String path = "unix".equals(dockerHost.getScheme()) ? dockerHost.getRawPath() : "/var/run/docker.sock";

core/src/main/java/org/testcontainers/dockerclient/DockerClientProviderStrategy.java

@@ -102,6 +102,13 @@ public boolean allowUserOverrides() {
         return true;
     }
 
+    /**
+   /* @return the path under which the Docker unix socket is reachable relative to the Docker daemon
+    */
+    public String getRemoteDockerUnixSocketPath() {
+        return null;
+    }
+
     /**
      * @return highest to lowest priority value
      */

core/src/main/java/org/testcontainers/dockerclient/DockerDesktopClientProviderStrategy.java

@@ -0,0 +1,84 @@
+package org.testcontainers.dockerclient;
+
+import lombok.Getter;
+import lombok.extern.slf4j.Slf4j;
+import org.apache.commons.lang3.SystemUtils;
+import org.jetbrains.annotations.Nullable;
+
+import java.net.URI;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.Optional;
+
+/**
+ * Look at the following paths:
+ * <ul>
+ *     <li>Linux: ~/.docker/desktop/docker.sock</li>
+ *     <li>MacOS: ~/.docker/run/docker.sock</li>
+ * </ul>
+ *
+ * @deprecated this class is used by the SPI and should not be used directly
+ */
+@Slf4j
+@Deprecated
+public class DockerDesktopClientProviderStrategy extends DockerClientProviderStrategy {
+
+    public static final int PRIORITY = UnixSocketClientProviderStrategy.PRIORITY - 1;
+
+    @Getter(lazy = true)
+    @Nullable
+    private final Path socketPath = resolveSocketPath();
+
+    private Path resolveSocketPath() {
+        Path linuxPath = Paths.get(System.getProperty("user.home")).resolve(".docker").resolve("desktop");
+        return tryFolder(linuxPath)
+            .orElseGet(() -> {
+                Path macosPath = Paths.get(System.getProperty("user.home")).resolve(".docker").resolve("run");
+                return tryFolder(macosPath).orElse(null);
+            });
+    }
+
+    @Override
+    public String getDescription() {
+        return "Rootless Docker accessed via Unix socket (" + getSocketPath() + ")";
+    }
+
+    @Override
+    public TransportConfig getTransportConfig() throws InvalidConfigurationException {
+        return TransportConfig.builder().dockerHost(URI.create("unix://" + getSocketPath().toString())).build();
+    }
+
+    @Override
+    protected int getPriority() {
+        return PRIORITY;
+    }
+
+    @Override
+    protected boolean isPersistable() {
+        return false;
+    }
+
+    @Override
+    public String getRemoteDockerUnixSocketPath() {
+        return "/var/run/docker.sock";
+    }
+
+    @Override
+    protected boolean isApplicable() {
+        return (SystemUtils.IS_OS_LINUX || SystemUtils.IS_OS_MAC) && this.socketPath != null;
+    }
+
+    private Optional<Path> tryFolder(Path path) {
+        if (!Files.exists(path)) {
+            log.debug("'{}' does not exist.", path);
+            return Optional.empty();
+        }
+        Path socketPath = path.resolve("docker.sock");
+        if (!Files.exists(socketPath)) {
+            log.debug("'{}' does not exist.", socketPath);
+            return Optional.empty();
+        }
+        return Optional.of(socketPath);
+    }
+}

core/src/main/resources/META-INF/services/org.testcontainers.dockerclient.DockerClientProviderStrategy

@@ -4,3 +4,4 @@ org.testcontainers.dockerclient.UnixSocketClientProviderStrategy
 org.testcontainers.dockerclient.DockerMachineClientProviderStrategy
 org.testcontainers.dockerclient.NpipeSocketClientProviderStrategy
 org.testcontainers.dockerclient.RootlessDockerClientProviderStrategy
+org.testcontainers.dockerclient.DockerDesktopClientProviderStrategy