Enable Ryuk as a privileged container by default (#7319)

Author: eddumelendez

core/src/main/java/org/testcontainers/utility/TestcontainersConfiguration.java

@@ -138,7 +138,7 @@ public String getTinyImage() {
     }
 
     public boolean isRyukPrivileged() {
-        return Boolean.parseBoolean(getEnvVarOrProperty("ryuk.container.privileged", "false"));
+        return Boolean.parseBoolean(getEnvVarOrProperty("ryuk.container.privileged", "true"));
     }
 
     @Deprecated

docs/features/configuration.md

@@ -76,7 +76,7 @@ Some companies disallow the usage of Docker Hub, but you can override `*.image`
 > **ryuk.container.image = testcontainers/ryuk:0.3.3**
 > The resource reaper is responsible for container removal and automatic cleanup of dead containers at JVM shutdown
 
-> **ryuk.container.privileged = false**
+> **ryuk.container.privileged = true**
 > In some environments ryuk must be started in privileged mode to work properly (--privileged flag)
 
 ### Disabling Ryuk