diff --git a/Dockerfile b/Dockerfile
index a7a3be9fb..6b4e22c73 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -14,7 +14,7 @@ COPY . .
 
 RUN poetry config virtualenvs.create false
 RUN poetry install --only main
-RUN poetry run python build.py
+RUN poetry run python tools/build.py
 
 ENV LNBITS_PORT="5000"
 ENV LNBITS_HOST="0.0.0.0"
diff --git a/docs/guide/installation.md b/docs/guide/installation.md
index 43e7e3889..ccfbd692d 100644
--- a/docs/guide/installation.md
+++ b/docs/guide/installation.md
@@ -92,7 +92,7 @@ python3.9 -m venv venv
 # create the data folder and the .env file
 mkdir data && cp .env.example .env
 # build the static files
-./venv/bin/python build.py
+./venv/bin/python tools/build.py
 ```
 
 #### Running the server
diff --git a/pyproject.toml b/pyproject.toml
index 346f0dc88..84104684d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -6,7 +6,7 @@ authors = ["Alan Bits <alan@lnbits.com>"]
 
 [tool.poetry.build]
 generate-setup-file = false
-script = "build.py"
+script = "tools/build.py"
 
 [tool.poetry.dependencies]
 python = "^3.10 | ^3.9 | ^3.8 | ^3.7"
diff --git a/tests/core/views/test_api.py b/tests/core/views/test_api.py
index 51d2fe606..5752b2798 100644
--- a/tests/core/views/test_api.py
+++ b/tests/core/views/test_api.py
@@ -274,4 +274,4 @@ async def test_pay_real_invoice(
         invoice["payment_hash"], inkey_headers_from["X-Api-Key"]
     )
     assert type(response) == dict
-    assert response["paid"] == True
+    assert response["paid"] is True
diff --git a/tests/helpers.py b/tests/helpers.py
index 7aceabc80..5ecbb17e7 100644
--- a/tests/helpers.py
+++ b/tests/helpers.py
@@ -45,7 +45,7 @@ is_regtest: bool = not is_fake
 
 docker_bitcoin_rpc = "lnbits"
 docker_prefix = "lnbits-legend"
-docker_cmd = f"docker exec"
+docker_cmd = "docker exec"
 
 docker_lightning = f"{docker_cmd} {docker_prefix}-clightning-2-1"
 docker_lightning_cli = f"{docker_lightning} lightning-cli --network regtest"
diff --git a/build.py b/tools/build.py
similarity index 97%
rename from build.py
rename to tools/build.py
index 834067c9e..76b85b9cc 100644
--- a/build.py
+++ b/tools/build.py
@@ -1,9 +1,10 @@
 import glob
 import os
 import warnings
+from pathlib import Path
 from typing import List
 
-LNBITS_PATH = os.path.dirname(os.path.realpath(__file__)) + "/lnbits"
+LNBITS_PATH = Path("lnbits").absolute()
 
 
 def get_js_vendored(prefer_minified: bool = False) -> List[str]: