fix: rbuilder upstream repo with reth-rbuilder binary (#828)

Depends on
https://github.com/ethpandaops/eth-client-docker-image-builder/pull/208
Depends on https://github.com/flashbots/rbuilder/pull/237

---------
Signed-off-by: Barnabas Busa <barnabas.busa@ethereum.org>

src/el/reth/reth_launcher.star

@@ -141,10 +141,13 @@ def get_config(
 
     used_ports = shared_utils.get_port_specs(used_port_assignments)
 
-    cmd = [
-        "{0}".format(
-            "/usr/local/bin/mev" if launcher.builder_type == "mev-rs" else "reth"
-        ),
+    cmd = []
+
+    if launcher.builder_type == "mev-rs":
+        cmd.append("build")
+
+    cmd.extend(
+        [
             "node",
             "-{0}".format(log_level),
             "--datadir=" + EXECUTION_DATA_DIRPATH_ON_CLIENT_CONTAINER,
@@ -157,8 +160,6 @@ def get_config(
             "--http.port={0}".format(RPC_PORT_NUM),
             "--http.addr=0.0.0.0",
             "--http.corsdomain=*",
-        # WARNING: The admin info endpoint is enabled so that we can easily get ENR/enode, which means
-        #  that users should NOT store private information in these Kurtosis nodes!
             "--http.api=admin,net,eth,web3,debug,txpool,trace{0}".format(
                 ",flashbots" if launcher.builder_type == "flashbots" else ""
             ),
@@ -175,6 +176,7 @@ def get_config(
             "--discovery.port={0}".format(discovery_port),
             "--port={0}".format(discovery_port),
         ]
+    )
 
     if launcher.network == constants.NETWORK_NAME.kurtosis:
         if len(existing_el_clients) > 0:
@@ -216,29 +218,22 @@ def get_config(
                 constants.EL_TYPE.reth + "_volume_size"
             ],
         )
-    cmd_str = " ".join(cmd)
-    env_vars = {
-        "RETH_CMD": cmd_str,
-    }
-    entrypoint_args = ["sh", "-c"]
-    env_vars = env_vars | participant.el_extra_env_vars
+    env_vars = {}
     image = participant.el_image
-    rbuilder_cmd = []
     if launcher.builder_type == "mev-rs":
         files[
             mev_rs_builder.MEV_BUILDER_MOUNT_DIRPATH_ON_SERVICE
         ] = mev_rs_builder.MEV_BUILDER_FILES_ARTIFACT_NAME
     elif launcher.builder_type == "flashbots":
+        image = constants.DEFAULT_FLASHBOTS_BUILDER_IMAGE
         cl_client_name = service_name.split("-")[4]
-        cmd.append("--engine.legacy")
-        cmd_str = " ".join(cmd)
+        cmd.append("--engine.experimental")
+        cmd.append("--rbuilder.config=" + flashbots_rbuilder.MEV_FILE_PATH_ON_CONTAINER)
         files[
             flashbots_rbuilder.MEV_BUILDER_MOUNT_DIRPATH_ON_SERVICE
         ] = flashbots_rbuilder.MEV_BUILDER_FILES_ARTIFACT_NAME
-        env_vars["RETH_CMD"] = cmd_str
         env_vars.update(
             {
-                "RBUILDER_CONFIG": flashbots_rbuilder.MEV_FILE_PATH_ON_CONTAINER,
                 "CL_ENDPOINT": "http://cl-{0}-{1}-{2}:{3}".format(
                     participant_index + 1,
                     cl_client_name,
@@ -247,19 +242,15 @@ def get_config(
                 ),
             }
         )
-        image = constants.DEFAULT_FLASHBOTS_BUILDER_IMAGE
-        cmd_str = "./app/entrypoint.sh"
-        entrypoint_args = []
 
     config_args = {
         "image": image,
         "ports": used_ports,
         "public_ports": public_ports,
-        "cmd": [cmd_str],
+        "cmd": cmd,
         "files": files,
-        "entrypoint": entrypoint_args,
         "private_ip_address_placeholder": constants.PRIVATE_IP_ADDRESS_PLACEHOLDER,
-        "env_vars": env_vars,
+        "env_vars": env_vars | participant.el_extra_env_vars,
         "labels": shared_utils.label_maker(
             client=constants.EL_TYPE.reth,
             client_type=constants.CLIENT_TYPES.el,

src/package_io/constants.star

@@ -88,7 +88,7 @@ COMMIT_BOOST_MEV_TYPE = "commit-boost"
 
 DEFAULT_SNOOPER_IMAGE = "ethpandaops/rpc-snooper:latest"
 DEFAULT_FLASHBOTS_RELAY_IMAGE = "flashbots/mev-boost-relay:0.29.2a3"
-DEFAULT_FLASHBOTS_BUILDER_IMAGE = "ethpandaops/rbuilder:develop"
+DEFAULT_FLASHBOTS_BUILDER_IMAGE = "ethpandaops/reth-rbuilder:develop"
 DEFAULT_FLASHBOTS_MEV_BOOST_IMAGE = "flashbots/mev-boost"
 DEFAULT_MEV_RS_IMAGE = "ethpandaops/mev-rs:main"
 DEFAULT_MEV_RS_IMAGE_MINIMAL = "ethpandaops/mev-rs:main-minimal"

src/package_io/input_parser.star

@@ -1303,7 +1303,7 @@ def enrich_mev_extra_params(parsed_arguments_dict, mev_prefix, mev_port, mev_typ
 
     if mev_type == constants.MEV_RS_MEV_TYPE:
         mev_participant = default_participant()
-        mev_participant["el_type"] = constants.EL_TYPE.reth
+        mev_participant["el_type"] = "reth-builder"
         mev_participant.update(
             {
                 "el_image": parsed_arguments_dict["mev_params"]["mev_builder_image"],