test: update tt3 config

Author: Alex-pvl

testcontainers/src/main/java/org/testcontainers/containers/tarantool/Tarantool3Container.java

@@ -227,8 +227,23 @@ protected void configure() {
         withEnv("TT_CONFIG_ETCD_ENDPOINTS", joinEtcdAddresses(this.etcdAddresses));
         withEnv("TT_CONFIG_ETCD_PREFIX", this.etcdPrefix);
       }
-      withCreateContainerCmdModifier(cmd -> cmd.withName(this.node).withUser("root"));
       withPrivilegedMode(true);
+      withCreateContainerCmdModifier(
+          cmd -> {
+            cmd.withName(this.node).withUser("root");
+            // Get original entrypoint, default to tarantool if not set
+            String originalEntrypoint = "tarantool";
+            if (cmd.getEntrypoint() != null && cmd.getEntrypoint().length > 0) {
+              originalEntrypoint = String.join(" ", cmd.getEntrypoint());
+            }
+            // Override entrypoint to fix permissions first, then exec original
+            cmd.withEntrypoint(
+                "sh",
+                "-c",
+                String.format(
+                    "chmod -R 777 %s 2>/dev/null || true && exec %s",
+                    TarantoolContainer.DEFAULT_DATA_DIR.toAbsolutePath(), originalEntrypoint));
+          });
       this.configured = true;
     } catch (Exception e) {
       throw new ContainerLaunchException(e.getMessage(), e);