From dd034b11d94b6eee9c1a30e80768c6c24429382e Mon Sep 17 00:00:00 2001
From: sinnottj-rse <james.r.sinnott@manchester.ac.uk>
Date: Fri, 9 Jan 2026 16:45:44 +0000
Subject: [PATCH] Don't store python build artefacts/pip cache in the image.
 Combine commands into a single RUN step where possible to avoid creating
 unnecessary image layers.

---
 Dockerfile | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/Dockerfile b/Dockerfile
index ff38baf..36401dd 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,8 +1,11 @@
 FROM python:3.14-slim
 
+ENV PYTHONDONTWRITEBYTECODE=1 \
+    PYTHONUNBUFFERED=1
+
 COPY requirements.txt requirements.txt
-RUN pip install -U pip
-RUN pip install -r requirements.txt
+RUN pip install --upgrade pip && \
+    pip install --no-cache-dir -r requirements.txt
 
 COPY . /app
 WORKDIR /app