diff --git a/.github/workflows/docker-publish.yml b/.github/workflows/docker-publish.yml
index b951e4e..b104391 100644
--- a/.github/workflows/docker-publish.yml
+++ b/.github/workflows/docker-publish.yml
@@ -9,7 +9,7 @@ on:
   schedule:
     - cron: '19 5 * * *'
   push:
-    branches: [ "master" ]
+    branches: [ "master", "pypy" ]
     # Publish semver tags as releases.
     tags: [ 'v*.*.*' ]
   pull_request:
@@ -76,7 +76,7 @@ jobs:
         uses: docker/build-push-action@0565240e2d4ab88bba5387d719585280857ece09 # v5.0.0
         with:
           context: .
-          platforms: linux/amd64,linux/arm64,linux/arm/v7
+          platforms: linux/amd64,linux/arm64
           push: ${{ github.event_name != 'pull_request' }}
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
diff --git a/Dockerfile b/Dockerfile
index ebb3a13..1da9881 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,11 +1,9 @@
-FROM python:3.12-alpine
+FROM pypy:3.10-slim
 
 WORKDIR /usr/src/app
 
 COPY . .
 
-RUN apk --no-cache add --virtual build-deps git build-base && \
-    pip install --no-cache-dir --prefer-binary -r requirements.txt && \
-    apk del build-deps
+RUN pip install --no-cache-dir --prefer-binary -r requirements.txt
 
-CMD [ "python", "./main.py" ]
+CMD [ "pypy", "./sungrowmodbus2mqtt.py" ]
diff --git a/main.py b/sungrowmodbus2mqtt.py
similarity index 100%
rename from main.py
rename to sungrowmodbus2mqtt.py