Docker from wheel, not sourcecode

this way we reuse all the thinking we did when getting the Python wheels in order.
* what to include/exclude
* setting up the scripts

Dockerfile

@@ -3,25 +3,29 @@ ARG PYTHON_VERSION=3.12
 # Build image: non-slim, in particular to build the mysqlclient wheel
 FROM python:${PYTHON_VERSION} AS build
 
-COPY ./requirements.txt .
+ARG WHEEL_FILE=wheelfile-not-specified.whoops
+
+COPY dist/$WHEEL_FILE /wheels/
 RUN --mount=type=cache,target=/var/cache/buildkit/pip \
-    pip wheel --wheel-dir /wheels -r requirements.txt
+    pip wheel --wheel-dir /wheels /wheels/${WHEEL_FILE}
 
 
 # Actual image (based on slim)
 FROM python:${PYTHON_VERSION}-slim
 
+# ARGs are not inherited from the build stage; https://stackoverflow.com/a/56748289/339144
+ARG WHEEL_FILE
+
 WORKDIR /app
 
 # mysqlclient dependencies; needed here too, because the built wheel depends on .o files
 RUN apt update && apt install default-libmysqlclient-dev -y
 
-COPY requirements.txt ./
 COPY --from=build /wheels /wheels
 RUN --mount=type=cache,target=/var/cache/buildkit/pip \
-    pip install --find-links /wheels --no-index -r requirements.txt
+    pip install --find-links /wheels --no-index /wheels/$WHEEL_FILE
 
-COPY . .
+COPY bugsink_conf.py .
 
 EXPOSE 9000
 

builddocker.bash

@@ -0,0 +1,8 @@
+#!/bin/bash
+set -e
+
+WHEEL_FILE=$(ls dist/ -1atr | grep bugsink | grep whl | tail -n1)
+
+echo "Building docker image with wheel file: $WHEEL_FILE"
+
+docker build --build-arg WHEEL_FILE=$WHEEL_FILE -t bugsink .