docker-examples: bump all base images to python:3.13

docker-example/production-app-platform/Dockerfile

@@ -23,7 +23,7 @@
 # for example, pass `docker build --platform=linux/amd64 ...`
 
 # Stage 1: init
-FROM python:3.11 as init
+FROM python:3.13 as init
 
 ARG uv=/root/.local/bin/uv
 
@@ -48,7 +48,7 @@ RUN $uv pip install -r requirements.txt
 RUN reflex init
 
 # Stage 2: copy artifacts into slim image 
-FROM python:3.11-slim
+FROM python:3.13-slim
 WORKDIR /app
 RUN adduser --disabled-password --home /app reflex
 COPY --chown=reflex --from=init /app /app

docker-example/production-compose/Dockerfile

@@ -2,7 +2,7 @@
 # instance of a Reflex app.
 
 # Stage 1: init
-FROM python:3.11 as init
+FROM python:3.13 as init
 
 ARG uv=/root/.local/bin/uv
 
@@ -35,7 +35,7 @@ RUN rm -rf .web && mkdir .web
 RUN mv /tmp/_static .web/_static
 
 # Stage 2: copy artifacts into slim image 
-FROM python:3.11-slim
+FROM python:3.13-slim
 WORKDIR /app
 RUN adduser --disabled-password --home /app reflex
 COPY --chown=reflex --from=init /app /app

docker-example/production-one-port/Dockerfile

@@ -59,4 +59,4 @@ EXPOSE $PORT
 CMD [ -d alembic ] && reflex db migrate; \
     caddy start && \
     redis-server --daemonize yes && \
-    exec reflex run --env prod --backend-only
+    exec reflex run --env prod --backend-only

docker-example/simple-one-port/Dockerfile

@@ -4,7 +4,7 @@
 # It uses a reverse proxy to serve the frontend statically and proxy to backend
 # from a single exposed port, expecting TLS termination to be handled at the
 # edge by the given platform.
-FROM python:3.11
+FROM python:3.13
 
 # If the service expects a different port, provide it here (f.e Render expects port 10000)
 ARG PORT=8080
@@ -38,4 +38,4 @@ EXPOSE $PORT
 CMD [ -d alembic ] && reflex db migrate; \
     caddy start && \
     redis-server --daemonize yes && \
-    exec reflex run --env prod --backend-only
+    exec reflex run --env prod --backend-only

docker-example/simple-two-port/Dockerfile

@@ -1,5 +1,5 @@
 # This Dockerfile is used to deploy a simple single-container Reflex app instance.
-FROM python:3.12
+FROM python:3.13
 
 RUN apt-get update && apt-get install -y redis-server && rm -rf /var/lib/apt/lists/*
 ENV REDIS_URL=redis://localhost PYTHONUNBUFFERED=1