diff --git a/script/hassfest/docker.py b/script/hassfest/docker.py
index 6e39a5c350b..bce77e1ece0 100644
--- a/script/hassfest/docker.py
+++ b/script/hassfest/docker.py
@@ -69,7 +69,7 @@ WORKDIR /config
 _HASSFEST_TEMPLATE = r"""# Automatically generated by hassfest.
 #
 # To update, run python3 -m script.hassfest -p docker
-FROM python:alpine3.20
+FROM python:alpine
 
 ENV \
     UV_SYSTEM_PYTHON=true \
@@ -79,20 +79,17 @@ SHELL ["/bin/sh", "-o", "pipefail", "-c"]
 ENTRYPOINT ["/usr/src/homeassistant/script/hassfest/docker/entrypoint.sh"]
 WORKDIR "/github/workspace"
 
-# Install uv
-COPY --from=ghcr.io/astral-sh/uv:{uv} /uv /bin/uv
-
 COPY . /usr/src/homeassistant
 
-RUN \
+# Uv is only needed during build
+RUN --mount=from=ghcr.io/astral-sh/uv:{uv},source=/uv,target=/bin/uv \
     # Required for PyTurboJPEG
     apk add --no-cache libturbojpeg \
-    && cd /usr/src/homeassistant \
     && uv pip install \
         --no-build \
         --no-cache \
-        -c homeassistant/package_constraints.txt \
-        -r requirements.txt \
+        -c /usr/src/homeassistant/homeassistant/package_constraints.txt \
+        -r /usr/src/homeassistant/requirements.txt \
         stdlib-list==0.10.0 pipdeptree=={pipdeptree} tqdm=={tqdm} ruff=={ruff} \
         {required_components_packages}
 
diff --git a/script/hassfest/docker/Dockerfile b/script/hassfest/docker/Dockerfile
index 4fc60c0c621..0d99b04c44c 100644
--- a/script/hassfest/docker/Dockerfile
+++ b/script/hassfest/docker/Dockerfile
@@ -1,7 +1,7 @@
 # Automatically generated by hassfest.
 #
 # To update, run python3 -m script.hassfest -p docker
-FROM python:alpine3.20
+FROM python:alpine
 
 ENV \
     UV_SYSTEM_PYTHON=true \
@@ -11,20 +11,17 @@ SHELL ["/bin/sh", "-o", "pipefail", "-c"]
 ENTRYPOINT ["/usr/src/homeassistant/script/hassfest/docker/entrypoint.sh"]
 WORKDIR "/github/workspace"
 
-# Install uv
-COPY --from=ghcr.io/astral-sh/uv:0.2.27 /uv /bin/uv
-
 COPY . /usr/src/homeassistant
 
-RUN \
+# Uv is only needed during build
+RUN --mount=from=ghcr.io/astral-sh/uv:0.2.27,source=/uv,target=/bin/uv \
     # Required for PyTurboJPEG
     apk add --no-cache libturbojpeg \
-    && cd /usr/src/homeassistant \
     && uv pip install \
         --no-build \
         --no-cache \
-        -c homeassistant/package_constraints.txt \
-        -r requirements.txt \
+        -c /usr/src/homeassistant/homeassistant/package_constraints.txt \
+        -r /usr/src/homeassistant/requirements.txt \
         stdlib-list==0.10.0 pipdeptree==2.23.1 tqdm==4.66.4 ruff==0.6.2 \
         PyTurboJPEG==1.7.5 ha-ffmpeg==3.2.0 hassil==1.7.4 home-assistant-intents==2024.8.29 mutagen==1.47.0
 
diff --git a/script/hassfest/docker/Dockerfile.dockerignore b/script/hassfest/docker/Dockerfile.dockerignore
index 75ed4f0e5d3..c109421fce1 100644
--- a/script/hassfest/docker/Dockerfile.dockerignore
+++ b/script/hassfest/docker/Dockerfile.dockerignore
@@ -6,3 +6,6 @@
 !script/
 script/hassfest/docker/
 !script/hassfest/docker/entrypoint.sh
+
+# Temporary files
+**/__pycache__
\ No newline at end of file