diff --git a/cli/classes/generated/definitions.py b/cli/classes/generated/definitions.py
index a6bf00ba..072b9713 100644
--- a/cli/classes/generated/definitions.py
+++ b/cli/classes/generated/definitions.py
@@ -116,23 +116,23 @@ class Author(RootModel):
     root: Union[str, ContactData] = Field(..., description='The author of the windfile.', title='Author')
 
 
-class ExternalAction(BaseModel):
+class FileAction(BaseModel):
     """
-    External action that can be executed with or without parameters.
+    Action that is defined in a file.
     """
 
     model_config = ConfigDict(
         extra='forbid',
     )
     name: str = Field(..., description='The name of the action.', examples=['rust-exercise-jobs'])
-    use: str = Field(..., description='The name of the external action.', title='Name of the external action.')
+    file: str = Field(..., description='The file that contains the action.')
     parameters: Optional[Parameters] = None
     excludeDuring: Optional[List[Lifecycle]] = Field(
         None,
         description='Exclude this action during the specified parts of the lifetime of an exercise.',
         title='Exclude during',
     )
-    environment: Optional[Environment] = Field(None, description='Environment variables for this external action.')
+    environment: Optional[Environment] = Field(None, description='Environment variables for this file action.')
     platform: Optional[Target] = Field(
         None,
         description="The platform that this action is defined for. If it's not set, the action is defined for all platforms.",
@@ -141,67 +141,67 @@ class ExternalAction(BaseModel):
     runAlways: Optional[bool] = Field(
         False, description='If this is set to true, the action is always executed, even if other actions fail.'
     )
-    workdir: Optional[str] = Field(
-        None, description='The working directory of the external action.', examples=['tests']
-    )
+    workdir: Optional[str] = Field(None, description='The working directory of the file action.', examples=['tests'])
     results: Optional[List[Result]] = Field(
         None, description='The results of the action. For the CI system to keep/publish.'
     )
 
 
-class FileAction(BaseModel):
+class PlatformAction(BaseModel):
     """
-    Action that is defined in a file.
+    Action that is defined for a specific platform.
     """
 
     model_config = ConfigDict(
         extra='forbid',
     )
     name: str = Field(..., description='The name of the action.', examples=['rust-exercise-jobs'])
-    file: str = Field(..., description='The file that contains the action.')
+    file: Optional[str] = Field(None, description='The file of the platform action. Written in Python')
     parameters: Optional[Parameters] = None
+    function: Optional[constr(pattern=r'^[a-zA-Z0-9._-]+$')] = Field(
+        'run', description='The function of the platform action.', examples=['run']
+    )
     excludeDuring: Optional[List[Lifecycle]] = Field(
         None,
         description='Exclude this action during the specified parts of the lifetime of an exercise.',
         title='Exclude during',
     )
-    environment: Optional[Environment] = Field(None, description='Environment variables for this file action.')
-    platform: Optional[Target] = Field(
-        None,
-        description="The platform that this action is defined for. If it's not set, the action is defined for all platforms.",
-    )
+    environment: Optional[Environment] = Field(None, description='Environment variables for this platform action.')
+    platform: Optional[Target] = Field(None, description='Ignored for this action.')
+    kind: Optional[str] = Field(None, description='The kind of the platform action.', examples=['junit'])
     docker: Optional[Docker] = Field(None, description='The docker configuration that is used to execute the action')
     runAlways: Optional[bool] = Field(
         False, description='If this is set to true, the action is always executed, even if other actions fail.'
     )
-    workdir: Optional[str] = Field(None, description='The working directory of the file action.', examples=['tests'])
+    workdir: Optional[str] = Field(
+        None, description='The working directory of the platform action.', examples=['tests']
+    )
     results: Optional[List[Result]] = Field(
         None, description='The results of the action. For the CI system to keep/publish.'
     )
 
 
-class PlatformAction(BaseModel):
+class ScriptAction(BaseModel):
     """
-    Action that is defined for a specific platform.
+    Internally defined action that can be executed.
     """
 
     model_config = ConfigDict(
         extra='forbid',
     )
     name: str = Field(..., description='The name of the action.', examples=['rust-exercise-jobs'])
-    file: Optional[str] = Field(None, description='The file of the platform action. Written in Python')
-    parameters: Optional[Parameters] = None
-    function: Optional[constr(pattern=r'^[a-zA-Z0-9._-]+$')] = Field(
-        'run', description='The function of the platform action.', examples=['run']
-    )
+    script: str = Field(..., description='The script of the internal action. Written in aeolus DSL')
     excludeDuring: Optional[List[Lifecycle]] = Field(
         None,
         description='Exclude this action during the specified parts of the lifetime of an exercise.',
         title='Exclude during',
     )
-    environment: Optional[Environment] = Field(None, description='Environment variables for this platform action.')
-    platform: Optional[Target] = Field(None, description='Ignored for this action.')
-    kind: Optional[str] = Field(None, description='The kind of the platform action.', examples=['junit'])
+    parameters: Optional[Parameters] = None
+    environment: Optional[Environment] = Field(None, description='Environment variables for this internal action.')
+    platform: Optional[Target] = Field(
+        None,
+        description="The platform that this action is defined for. If it's not set, the action is defined for all platforms.",
+    )
     docker: Optional[Docker] = Field(None, description='The docker configuration that is used to execute the action')
     runAlways: Optional[bool] = Field(
         False, description='If this is set to true, the action is always executed, even if other actions fail.'
@@ -214,23 +214,23 @@ class PlatformAction(BaseModel):
     )
 
 
-class ScriptAction(BaseModel):
+class TemplateAction(BaseModel):
     """
-    Internally defined action that can be executed.
+    Template action that can be executed with or without parameters.
     """
 
     model_config = ConfigDict(
         extra='forbid',
     )
     name: str = Field(..., description='The name of the action.', examples=['rust-exercise-jobs'])
-    script: str = Field(..., description='The script of the internal action. Written in aeolus DSL')
+    use: str = Field(..., description='The name of the template action.', title='Name of the template action.')
+    parameters: Optional[Parameters] = None
     excludeDuring: Optional[List[Lifecycle]] = Field(
         None,
         description='Exclude this action during the specified parts of the lifetime of an exercise.',
         title='Exclude during',
     )
-    parameters: Optional[Parameters] = None
-    environment: Optional[Environment] = Field(None, description='Environment variables for this internal action.')
+    environment: Optional[Environment] = Field(None, description='Environment variables for this template action.')
     platform: Optional[Target] = Field(
         None,
         description="The platform that this action is defined for. If it's not set, the action is defined for all platforms.",
@@ -240,7 +240,7 @@ class ScriptAction(BaseModel):
         False, description='If this is set to true, the action is always executed, even if other actions fail.'
     )
     workdir: Optional[str] = Field(
-        None, description='The working directory of the platform action.', examples=['tests']
+        None, description='The working directory of the template action.', examples=['tests']
     )
     results: Optional[List[Result]] = Field(
         None, description='The results of the action. For the CI system to keep/publish.'
@@ -285,7 +285,7 @@ class WindfileMetadata(BaseModel):
 
 
 class Action(RootModel):
-    root: Union[FileAction, ScriptAction, PlatformAction, ExternalAction] = Field(
+    root: Union[FileAction, ScriptAction, PlatformAction, TemplateAction] = Field(
         ..., description='Action that can be executed.', title='Action'
     )
 
diff --git a/cli/classes/merger.py b/cli/classes/merger.py
index 600d3ac9..662cba56 100644
--- a/cli/classes/merger.py
+++ b/cli/classes/merger.py
@@ -18,7 +18,7 @@
     Environment,
     PlatformAction,
     FileAction,
-    ExternalAction,
+    TemplateAction,
     ScriptAction,
     Docker,
 )
@@ -33,7 +33,7 @@
     get_external_actions,
     get_file_actions,
     Validator,
-    get_internal_actions_with_names,
+    get_script_actions_with_names,
 )
 from cli_utils import logger, utils
 from cli_utils.utils import get_content_of, get_path_to_file, file_exists
@@ -124,8 +124,8 @@ def merge_script_actions(self) -> bool:
         """
         if self.windfile is None:
             return False
-        logger.info("🏠 ", "Merging internal actions", self.output_settings.emoji)
-        actions: List[tuple[str, Action]] = get_internal_actions_with_names(self.windfile)
+        logger.info("🏠 ", "Merging script actions", self.output_settings.emoji)
+        actions: List[tuple[str, Action]] = get_script_actions_with_names(self.windfile)
         for action in actions:
             index: int = [i for i, item in enumerate(self.windfile.actions) if action[0] == item.root.name][0]
             merge_docker(self.windfile.metadata.docker, self.windfile.actions[index])
@@ -178,7 +178,7 @@ def set_original_types(self, names: List[str], key: str) -> None:
             )
 
     def pull_external_action(
-        self, action: ExternalAction
+        self, action: TemplateAction
     ) -> Optional[typing.Tuple[typing.List[str], typing.List[Action]]]:
         """
         Pulls the given external action from GitHub/or other GIT hostings and converts it to internal actions.
@@ -283,14 +283,14 @@ def traverse_external_actions(
                     if isinstance(action, PlatformAction):
                         if path is None:
                             converted = ([name], [Action(root=action)])
-                elif isinstance(action, ExternalAction):
+                elif isinstance(action, TemplateAction):
                     path = action.use
                 if path:
                     converted = self.convert_external_action_to_internal(
                         external_file=path,
                         action=action,
                     )
-                    if not converted and isinstance(action, ExternalAction):
+                    if not converted and isinstance(action, TemplateAction):
                         # try to pull the action from GitHub
                         converted = self.pull_external_action(action=action)
                     if not converted:
@@ -393,7 +393,7 @@ def convert_actionfile_to_script_actions(
             for internals in actionfile.steps:
                 internal: Optional[Action] = None
                 content: Optional[str] = None
-                if isinstance(internals.root, ExternalAction):
+                if isinstance(internals.root, TemplateAction):
                     logger.error(
                         "❌ ",
                         "external actions in an external action are not supported yet",
@@ -473,7 +473,7 @@ def convert_actionfile_to_script_actions(
     def convert_external_action_to_internal(
         self,
         external_file: str,
-        action: ExternalAction | FileAction | PlatformAction | Action,
+        action: TemplateAction | FileAction | PlatformAction | Action,
     ) -> Optional[typing.Tuple[typing.List[str], typing.List[Action]]]:
         """
         Converts the given external action to an internal action. For
@@ -511,7 +511,7 @@ def convert_external_action_to_internal(
                 )
                 original_types.append("file")
                 actions.append(internal_action)
-            if isinstance(action, ExternalAction):
+            if isinstance(action, TemplateAction):
                 logger.info(
                     "📄 ",
                     f"reading external action {absolute_path}",
diff --git a/cli/classes/validator.py b/cli/classes/validator.py
index f5d1b00a..f3cdce87 100644
--- a/cli/classes/validator.py
+++ b/cli/classes/validator.py
@@ -10,7 +10,7 @@
 from classes.generated.actionfile import ActionFile
 from classes.generated.definitions import (
     Action,
-    ExternalAction,
+    TemplateAction,
     FileAction,
     ScriptAction,
     PlatformAction,
@@ -30,7 +30,7 @@ def has_external_actions(windfile: WindFile) -> bool:
     :return: True if the windfile contains external actions, False otherwise
     """
     for action in windfile.actions:
-        if isinstance(action.root, ExternalAction):
+        if isinstance(action.root, TemplateAction):
             return True
     return False
 
@@ -43,7 +43,7 @@ def get_external_actions(
     :param windfile: WindFile to analyze
     :return: List of external actions in the given windfile
     """
-    return get_actions_of_type(action_type=ExternalAction, windfile=windfile)
+    return get_actions_of_type(action_type=TemplateAction, windfile=windfile)
 
 
 def get_platform_actions(
@@ -90,11 +90,11 @@ def get_file_actions(
     return get_actions_of_type(action_type=FileAction, windfile=windfile)
 
 
-def get_internal_actions_with_names(
+def get_script_actions_with_names(
     windfile: typing.Optional[WindFile],
 ) -> typing.List[typing.Tuple[str, Action]]:
     """
-    Returns a list of all internal actions in the given windfile with their names.
+    Returns a list of all script actions in the given windfile with their names.
     :param windfile: Windfile to analyze
     :return: List of actions in the given windfile
     """
@@ -103,17 +103,17 @@ def get_internal_actions_with_names(
 
 def get_actions(
     windfile: WindFile,
-) -> typing.List[ScriptAction | ExternalAction | FileAction | PlatformAction]:
+) -> typing.List[ScriptAction | TemplateAction | FileAction | PlatformAction]:
     """
     Returns a list of all actions in the given windfile.
     :param windfile: Windfile to analyze
     :return: List of actions
     """
-    actions: typing.List[ScriptAction | ExternalAction | FileAction | PlatformAction] = []
+    actions: typing.List[ScriptAction | TemplateAction | FileAction | PlatformAction] = []
     for action in windfile.actions:
         if isinstance(action.root, ScriptAction):
             actions.append(action.root)
-        elif isinstance(action.root, ExternalAction):
+        elif isinstance(action.root, TemplateAction):
             actions.append(action.root)
         elif isinstance(action.root, FileAction):
             actions.append(action.root)
diff --git a/cli/cli_utils/utils.py b/cli/cli_utils/utils.py
index e38b7bb6..8949cda9 100644
--- a/cli/cli_utils/utils.py
+++ b/cli/cli_utils/utils.py
@@ -18,7 +18,7 @@
     ScriptAction,
     FileAction,
     PlatformAction,
-    ExternalAction,
+    TemplateAction,
 )
 from classes.generated.environment import EnvironmentSchema
 from classes.generated.windfile import WindFile
@@ -339,7 +339,7 @@ def clean_up(windfile: WindFile, output_settings: OutputSettings) -> None:
     """
     combine_docker_config(windfile=windfile, output_settings=output_settings)
     for index, _ in enumerate(windfile.actions):
-        root_action: FileAction | ScriptAction | PlatformAction | ExternalAction = windfile.actions[index].root
+        root_action: FileAction | ScriptAction | PlatformAction | TemplateAction = windfile.actions[index].root
         if root_action.environment is not None and len(root_action.environment.root.root) == 0:
             root_action.environment = None
         if root_action.parameters is not None and len(root_action.parameters.root.root) == 0:
diff --git a/cli/templates/Jenkinsfile.j2 b/cli/templates/Jenkinsfile.j2
index 3b3f6d11..a5a509e8 100644
--- a/cli/templates/Jenkinsfile.j2
+++ b/cli/templates/Jenkinsfile.j2
@@ -99,12 +99,12 @@ pipeline {
           {%- if step.workdir %}
           dir('{{ step.workdir }}') {
             sh '''
-            {{ step.script }}
+            {{ step.script | indent(12, false) }}
             '''
           }
           {%- else %}
           sh '''
-          {{ step.script }}
+            {{ step.script | indent(12, false) }}
           '''
           {%- endif %}
         }
@@ -120,12 +120,12 @@ pipeline {
       {%- if action.workdir %}
       dir('{{ action.workdir }}') {
         sh '''
-        {{ action.script }}
+        {{ action.script | indent(8, false) }}
         '''
       }
       {%- else %}
       sh '''
-      {{ action.script }}
+      {{ action.script | indent(6, false) }}
       '''
       {%- endif %}
     }
diff --git a/cli/templates/cli.sh.j2 b/cli/templates/cli.sh.j2
index 8737b5e0..1d05369b 100644
--- a/cli/templates/cli.sh.j2
+++ b/cli/templates/cli.sh.j2
@@ -48,7 +48,7 @@ export {{ env_var }}="{{ environment[env_var] }}"
    cp -a ${_sources} {{ metadata.moveResultsTo }}/${_directory}
    {%- endfor -%}
   {%- endif -%}
-  {{ step.script }}
+  {{ step.script | indent(2, false) }}
   {%- if metadata.moveResultsTo %}
    cd {{ initial_directory }}
    mkdir -p {{ metadata.moveResultsTo }}
diff --git a/cli/test/test_merge.py b/cli/test/test_merge.py
index 4cfc9947..1f3768c0 100644
--- a/cli/test/test_merge.py
+++ b/cli/test/test_merge.py
@@ -11,7 +11,7 @@
     VALID_WINDFILE_WITH_NON_EXISTING_ACTIONFILE,
     VALID_WINDFILE_WITH_FILEACTION,
 )
-from classes.generated.definitions import FileAction, PlatformAction, ExternalAction, ScriptAction
+from classes.generated.definitions import FileAction, PlatformAction, TemplateAction, ScriptAction
 from classes.generated.windfile import WindFile
 from classes.input_settings import InputSettings
 from classes.merger import Merger
@@ -47,7 +47,7 @@ def test_merge_no_external_actions(self) -> None:
             self.assertEqual(len(index), 1)
             self.assertTrue(isinstance(windfile.actions[index[0]].root, ScriptAction))
             if isinstance(windfile.actions[index[0]].root, ScriptAction):
-                action: FileAction | ScriptAction | PlatformAction | ExternalAction = windfile.actions[index[0]].root
+                action: FileAction | ScriptAction | PlatformAction | TemplateAction = windfile.actions[index[0]].root
                 self.assertTrue(isinstance(action, ScriptAction))
                 if isinstance(action, ScriptAction):
                     self.assertEqual(action.script, 'echo "This is an internal action"')
@@ -111,7 +111,7 @@ def test_merge_with_external_actions(self) -> None:
                     index: list[int] = [i for i, item in enumerate(windfile.actions) if name == item.root.name]
                     self.assertEqual(len(index), 1)
                     actual_index: int = index[0]
-                    action: FileAction | ScriptAction | PlatformAction | ExternalAction = windfile.actions[
+                    action: FileAction | ScriptAction | PlatformAction | TemplateAction = windfile.actions[
                         actual_index
                     ].root
                     self.assertTrue(isinstance(action, ScriptAction))
@@ -151,7 +151,7 @@ def test_merge_with_file_action(self) -> None:
                 index: list[int] = [i for i, item in enumerate(windfile.actions) if "file-action_0" == item.root.name]
                 self.assertEqual(len(index), 1)
                 self.assertTrue(isinstance(windfile.actions[index[0]].root, ScriptAction))
-                action: FileAction | ScriptAction | PlatformAction | ExternalAction = windfile.actions[index[0]].root
+                action: FileAction | ScriptAction | PlatformAction | TemplateAction = windfile.actions[index[0]].root
                 if isinstance(action, ScriptAction):
                     self.assertEqual(action.script, content)
                     if action.excludeDuring is None:
diff --git a/schemas/v0.0.1/schemas/definitions.json b/schemas/v0.0.1/schemas/definitions.json
index 689972b1..e4faf71b 100644
--- a/schemas/v0.0.1/schemas/definitions.json
+++ b/schemas/v0.0.1/schemas/definitions.json
@@ -184,7 +184,7 @@
         "$ref": "#/platform-action"
       },
       {
-        "$ref": "#/external-action"
+        "$ref": "#/template-action"
       }
     ]
   },
@@ -406,9 +406,9 @@
       "script"
     ]
   },
-  "external-action": {
-    "title": "External Action",
-    "description": "External action that can be executed with or without parameters.",
+  "template-action": {
+    "title": "Template Action",
+    "description": "Template action that can be executed with or without parameters.",
     "type": "object",
     "additionalProperties": false,
     "properties": {
@@ -420,8 +420,8 @@
         ]
       },
       "use": {
-        "description": "The name of the external action.",
-        "title": "Name of the external action.",
+        "description": "The name of the template action.",
+        "title": "Name of the template action.",
         "type": "string"
       },
       "parameters": {
@@ -436,7 +436,7 @@
         }
       },
       "environment": {
-        "description": "Environment variables for this external action.",
+        "description": "Environment variables for this template action.",
         "$ref": "#/environment"
       },
       "platform": {
@@ -453,7 +453,7 @@
         "default": false
       },
       "workdir": {
-        "description": "The working directory of the external action.",
+        "description": "The working directory of the template action.",
         "type": "string",
         "examples": [
           "tests"