Update dockerfiles to use alpine again

backend/Dockerfile

@@ -1,30 +1,15 @@
-#
-# Licensed to the Apache Software Foundation (ASF) under one
-# or more contributor license agreements. See the NOTICE file
-# distributed with this work for additional information
-# regarding copyright ownership. The ASF licenses this file
-# to you under the Apache License, Version 2.0 (the
-# "License"); you may not use this file except in compliance
-# with the License. You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing,
-# software distributed under the License is distributed on an
-# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-# KIND, either express or implied. See the License for the
-# specific language governing permissions and limitations
-# under the License.
-#
-FROM --platform=linux/amd64 python:3 AS build-env
-COPY . /app
-WORKDIR /app
+FROM python:alpine AS build
 
-RUN pip install --no-cache-dir httpx starlette uvicorn
+RUN pip install --no-cache-dir starlette uvicorn
 
-FROM gcr.io/distroless/python3-debian12:latest-amd64
+FROM python:alpine AS run
+
+RUN adduser -S sampan -G root
+USER sampan
+
+COPY --from=build /usr/local/lib/python3.12/site-packages /usr/local/lib/python3.12/site-packages
+COPY --chown=sampan:root python /home/sampan/python
 
-COPY --from=build-env /app /app
-WORKDIR /app
 EXPOSE 8080
-CMD ["python/main.py"]
+WORKDIR /home/sampan
+ENTRYPOINT ["python", "python/main.py"]

frontend/Dockerfile

@@ -17,15 +17,19 @@
 # under the License.
 #
 
-FROM python:3 AS build-env
-COPY . /app
-WORKDIR /app
+FROM python:alpine AS build
 
 RUN pip install --no-cache-dir httpx starlette sse_starlette uvicorn
 
-FROM gcr.io/distroless/python3-debian12
+FROM python:alpine AS run
+
+RUN adduser -S sampan -G root
+USER sampan
+
+COPY --from=build /usr/local/lib/python3.12/site-packages /usr/local/lib/python3.12/site-packages
+COPY --chown=sampan:root python /home/sampan/python
+COPY --chown=sampan:root static /home/sampan/static
 
-COPY --from=build-env /app /app
-WORKDIR /app
 EXPOSE 8080
-CMD ["python/main.py"]
+WORKDIR /home/sampan
+ENTRYPOINT ["python", "python/main.py"]