Update Docker images to Python 3.14

docker/Dockerfile

@@ -1,4 +1,4 @@
-FROM python:3.12-slim
+FROM python:3.14-slim
 
 LABEL org.opencontainers.image.source=https://github.com/benoitc/gunicorn
 LABEL org.opencontainers.image.description="Gunicorn Python WSGI HTTP Server"

examples/celery_alternative/Dockerfile

@@ -7,7 +7,7 @@
 # - Celery: Needs separate web + worker containers + Redis/RabbitMQ
 # - Dirty: Single container handles both HTTP and background tasks
 
-FROM python:3.12-slim
+FROM python:3.14-slim
 
 # Set working directory
 WORKDIR /app

examples/dirty_example/Dockerfile

@@ -2,7 +2,7 @@
 # This file is part of gunicorn released under the MIT license.
 # See the NOTICE for more information.
 
-FROM python:3.12-slim
+FROM python:3.14-slim
 
 WORKDIR /app
 

examples/embedding_service/Dockerfile

@@ -1,4 +1,4 @@
-FROM python:3.12-slim
+FROM python:3.14-slim
 
 WORKDIR /app
 

examples/http2_features/Dockerfile

@@ -1,4 +1,4 @@
-FROM python:3.12-slim
+FROM python:3.14-slim
 
 WORKDIR /app
 

examples/http2_gevent/Dockerfile

@@ -3,7 +3,7 @@
 # Build: docker build -t gunicorn-http2-gevent .
 # Run:   docker run -p 8443:8443 -v $(pwd)/certs:/certs:ro gunicorn-http2-gevent
 
-FROM python:3.12-slim
+FROM python:3.14-slim
 
 # Install build dependencies for gevent and h2
 RUN apt-get update && apt-get install -y --no-install-recommends \

examples/streaming_chat/Dockerfile

@@ -1,4 +1,4 @@
-FROM python:3.12-slim
+FROM python:3.14-slim
 
 WORKDIR /app
 

tests/docker/asgi/Dockerfile

@@ -1,4 +1,4 @@
-FROM python:3.11-slim
+FROM python:3.14-slim
 
 WORKDIR /build
 

tests/docker/asgi_compliance/Dockerfile.gunicorn

@@ -1,4 +1,4 @@
-FROM python:3.12-slim
+FROM python:3.14-slim
 
 # Install build dependencies
 RUN apt-get update && apt-get install -y --no-install-recommends \

tests/docker/dirty_arbiter/Dockerfile

@@ -1,4 +1,4 @@
-FROM python:3.12-slim
+FROM python:3.14-slim
 
 WORKDIR /app
 

tests/docker/dirty_ttin_ttou/Dockerfile

@@ -1,4 +1,4 @@
-FROM python:3.12-slim
+FROM python:3.14-slim
 
 RUN apt-get update && apt-get install -y --no-install-recommends \
     curl procps \

tests/docker/http2/Dockerfile.gunicorn

@@ -1,4 +1,4 @@
-FROM python:3.12-slim
+FROM python:3.14-slim
 
 # Install build dependencies for h2 and other packages
 RUN apt-get update && apt-get install -y --no-install-recommends \

tests/docker/per_app_allocation/Dockerfile

@@ -1,4 +1,4 @@
-FROM python:3.12-slim
+FROM python:3.14-slim
 
 WORKDIR /app
 

tests/docker/test_asgi_uwsgi/Dockerfile

@@ -1,4 +1,4 @@
-FROM python:3.11-slim
+FROM python:3.14-slim
 
 WORKDIR /build
 

tests/docker/uwsgi/Dockerfile.gunicorn

@@ -1,4 +1,4 @@
-FROM python:3.11-slim
+FROM python:3.14-slim
 
 WORKDIR /app