diff --git a/firestarter/cli/parser.py b/firestarter/cli/parser.py
index 4b4b238f..e1e35657 100644
--- a/firestarter/cli/parser.py
+++ b/firestarter/cli/parser.py
@@ -20,25 +20,35 @@ def main():
     arg_parser = argparse.ArgumentParser()
 
     arg_parser.add_argument('workflow', type=str, help='Name of the workflow to run')
-    arg_parser.add_argument('--vars', type=str, help='Variables to pass to the workflow, in inline table toml format. Example: --vars=\'vars = { var1= "value1", var2= "value2"}\'')
-    arg_parser.add_argument('--secrets', type=str, help='Secrets to pass to the workflow, in inline table toml format. Example: --secrets=\'secrets = { secret1= "foo", secret2= "bar"}\'')
+    arg_parser.add_argument('--vars', type=str, help='Variables to pass to the workflow, as an inline toml format dict. Example: --vars=\'{ var1= "value1", var2= "value2"}\'')
+    arg_parser.add_argument('--secrets', type=str, help='Secrets to pass to the workflow, as an inline toml format dict. Example: --secrets=\'{ secret1= "foo", secret2= "bar"}\'')
+    arg_parser.add_argument('--additional_build_args', type=str, help='Additional build_args to pass to the workflow, as an inline toml format dict. Example: --additional_build_args=\'{ build_arg1= "arg1", build_arg2= "arg2"}\'')
     arg_parser.add_argument('--config_file', type=str, help='Optional configuration file for the workflow, located in the repository')
     args = arg_parser.parse_args()
 
     input_vars = os.environ.get("INPUT_VARS", None)
     input_secrets = os.environ.get("INPUT_SECRETS", None)
+    input_additional_build_args = os.environ.get("INPUT_ADDITIONAL_BUILD_ARGS", None)
     input_config_file = os.environ.get("INPUT_CONFIG_FILE", None)
 
     vars = tomllib.loads(input_vars) if input_vars is not None else {}
     secrets = tomllib.loads(input_secrets) if input_secrets is not None else {}
+    additional_build_args =\
+        tomllib.loads(input_additional_build_args) if input_additional_build_args is not None else {}
     config_file = input_config_file if input_config_file is not None else args.config_file
 
     if args.vars:
+      args.vars = f"vars = {args.vars}"
       vars.update(tomllib.loads(args.vars).get("vars"))
       logger.debug(f"Inline vars: {vars}")
     if args.secrets:
+      args.secrets = f"secrets = {args.secrets}"
       secrets.update(tomllib.loads(args.secrets).get("secrets"))
       logger.debug(f"Inline secrets: {secrets}")
+    if args.additional_build_args:
+      args.additional_build_args = f"additional_build_args = {args.additional_build_args}"
+      additional_build_args.update(tomllib.loads(args.additional_build_args).get("additional_build_args"))
+      logger.debug(f"Inline additional_build_args: {additional_build_args}")
 
     # Import the workflow module from the workflow name
     workflow = importlib.import_module(f"firestarter.workflows.{args.workflow}")
@@ -46,6 +56,7 @@ def main():
     result = workflow.run(
         vars=vars,
         secrets=secrets,
+        additional_build_args=additional_build_args,
         config_file=config_file,
     )
 
diff --git a/firestarter/common/firestarter_workflow.py b/firestarter/common/firestarter_workflow.py
index 628610a1..7786efb3 100644
--- a/firestarter/common/firestarter_workflow.py
+++ b/firestarter/common/firestarter_workflow.py
@@ -4,6 +4,7 @@ def __init__(self, **kwargs) -> None:
         self._config_file = kwargs.get('config_file', None)
         self._vars = kwargs.get('vars', None)
         self._secrets = kwargs.get('secrets', None)
+        self._additional_build_args = kwargs.get('additional_build_args', None)
         self.__validate_required_vars()
 
     def __validate_required_vars(self):
@@ -23,6 +24,10 @@ def config_file(self):
     def vars(self):
         return self._vars
 
+    @property
+    def additional_build_args(self):
+        return self._additional_build_args
+
     @property
     def secrets(self):
         return self._secrets
diff --git a/firestarter/tests/test_build_images_functionality.py b/firestarter/tests/test_build_images_functionality.py
index 60171782..45c9a281 100644
--- a/firestarter/tests/test_build_images_functionality.py
+++ b/firestarter/tests/test_build_images_functionality.py
@@ -29,6 +29,7 @@
     "platforms": "linux/amd64,linux/arm64",
 }
 secrets = {}
+additional_build_args = {}
 config_file_path = f"{os.path.dirname(os.path.realpath(__file__))}/fixtures/build_images.yaml"
 
 with open(config_file_path, 'r') as config_file:
@@ -57,7 +58,10 @@ def reset_builder_value() -> None:
     global builder
 
     builder = BuildImages(
-        vars=vars, secrets=secrets, config_file=config_file_path
+        vars=vars,
+        secrets=secrets,
+        additional_build_args=additional_build_args,
+        config_file=config_file_path
     )
 
 
diff --git a/firestarter/workflows/build_images/README.md b/firestarter/workflows/build_images/README.md
index 3d1c9c6c..b58bc7fe 100644
--- a/firestarter/workflows/build_images/README.md
+++ b/firestarter/workflows/build_images/README.md
@@ -26,7 +26,7 @@ Beyond the configuration file which is mandatory, there are some other extra var
 Additionally there are some optional variables:
 
 * `container_structure_filename`: path of the [container-structure-test](https://github.com/GoogleContainerTools/container-structure-test) filename (if not set, no tests are checked)
-    
+
     > Highly recommended! ⚠️
 * `publish`: publish the docker image to the registry
 
@@ -44,6 +44,21 @@ RUN --mount=type=secret,id=github_token,dst=/run/secrets/github_token \
 
 > Remember to make sure the secret key name and secret id are the same
 
+
+## Additional build args
+
+In addition to those found in the configuration file, additional build args may be set using the command line argument `--additional-build-args` or via the `INPUT_ADDITIONAL_BUILD_ARGS` environment variable. These values can then be used in the Dockerfile, for example:
+
+```Dockerfile
+ARG YOUR_BUILD_ARG
+ENV YOUR_BUILD_ARG=$YOUR_BUILD_ARG
+
+RUN echo "The additional build arg is: $YOUR_BUILD_ARG"
+```
+
+> [!WARNING]
+> Secrets and build args set in the configuration file will overwrite those set via the command line or environment variables.
+
 ## Example
 
 1. Create a repository that uses run-dagger-py (check [docs](https://github.com/prefapp/run-dagger-py/blob/main/docs/index.md) for more details).
diff --git a/firestarter/workflows/build_images/__init__.py b/firestarter/workflows/build_images/__init__.py
index 0f5b10da..a18eb722 100644
--- a/firestarter/workflows/build_images/__init__.py
+++ b/firestarter/workflows/build_images/__init__.py
@@ -4,9 +4,14 @@
 
 logger = logging.getLogger(__name__)
 
-def run(*, vars: dict, secrets: dict, config_file:str):
+def run(*, vars: dict, secrets: dict, additional_build_args: dict, config_file:str):
     try:
-        wf = BuildImages(vars=vars, secrets=secrets, config_file=config_file)
+        wf = BuildImages(
+            vars=vars,
+            secrets=secrets,
+            additional_build_args=additional_build_args,
+            config_file=config_file
+        )
         return wf.execute()
     except Exception as e:
         logger.exception("Fatal error encountered during BuildImages execution.")
diff --git a/firestarter/workflows/build_images/build_images.py b/firestarter/workflows/build_images/build_images.py
index 10016775..554e42bd 100644
--- a/firestarter/workflows/build_images/build_images.py
+++ b/firestarter/workflows/build_images/build_images.py
@@ -378,6 +378,16 @@ async def compile_images_for_all_flavors(self):
                 f"Using these secrets for all flavors: {self.secrets.keys()}"
             )
 
+            build_args_for_all_flavors = []
+            for key, value in self.additional_build_args.items():
+                build_args_for_all_flavors.append(
+                    dagger.BuildArg(name=key, value=value)
+                )
+
+            logger.info(
+                f"Using these build_args for all flavors: {self.additional_build_args.keys()}"
+            )
+
             for flavor in self.flavors:
                 registry, full_repo_name, build_args,\
                         dockerfile, extra_registries,\
@@ -416,6 +426,14 @@ async def compile_images_for_all_flavors(self):
                     for key, value in build_args.items()
                 ]
 
+                # Combine generic and custom build_args for this flavor
+                # (Order matters: the args added in the second array will
+                # overwrite the ones with the same name in the first array.
+                # In this case, args defined in the flavor configuration will
+                # overwrite the same args defined as command line arguments
+                # or environment variables)
+                full_build_args = build_args_for_all_flavors + build_args_list
+
                 resolved_secret_refs = self.resolve_secrets(
                     self.config.images[flavor].secrets or {}
                 )
@@ -433,6 +451,11 @@ async def compile_images_for_all_flavors(self):
                     flavor_secrets.append(client.set_secret(key, value))
 
                 # Combine generic and custom secrets for this flavor
+                # (Order matters: the secrets added in the second array will
+                # overwrite the ones with the same name in the first array.
+                # In this case, secretss defined in the flavor configuration
+                # will overwrite the same secrets defined as command line
+                # arguments or environment variables)
                 secrets = secrets_for_all_flavors + flavor_secrets
 
                 # Set the address for the default registry
@@ -471,7 +494,7 @@ async def compile_images_for_all_flavors(self):
                 for image in registry_list:
                     await self.compile_image_and_publish(
                         client,
-                        build_args_list,
+                        full_build_args,
                         secrets,
                         dockerfile,
                         image,