Rebuild over base image with poetry embedded

Author: nanomad

Dockerfile

@@ -1,7 +1,7 @@
-FROM python:3.12 AS builder
+ARG POETRY_VERSION=1.8.3
+ARG PYTHON_VERSION=3.12
 
-# --- Install Poetry ---
-ARG POETRY_VERSION=1.8
+FROM weastur/poetry:${POETRY_VERSION}-python-${PYTHON_VERSION} AS builder
 
 ENV POETRY_HOME=/opt/poetry
 ENV POETRY_NO_INTERACTION=1
@@ -12,7 +12,16 @@ ENV PYTHONUNBUFFERED=1
 # Tell Poetry where to place its cache and virtual environment
 ENV POETRY_CACHE_DIR=/opt/.cache
 
-RUN pip install "poetry==${POETRY_VERSION}"
+# Install build-time deps for poetry and FFI
+RUN apt-get update  \
+    && apt-get install -y --no-install-recommends \
+            build-essential \
+            g++ \
+            gcc \
+            libffi-dev \
+            libssl-dev \
+            pkg-config \
+    && rm -rf /var/lib/apt/lists/*
 
 WORKDIR /usr/src/app
 
@@ -23,11 +32,11 @@ COPY pyproject.toml poetry.lock /usr/src/app/
 
 # Install the dependencies and clear the cache afterwards.
 #   This may save some MBs.
-RUN poetry install --no-root && rm -rf $POETRY_CACHE_DIR
+RUN --mount=type=tmpfs,target=/root/.cargo poetry install --no-root && rm -rf $POETRY_CACHE_DIR
 
 # Now let's build the runtime image from the builder.
 #   We'll just copy the env and the PATH reference.
-FROM python:3.12-slim AS runtime
+FROM python:${PYTHON_VERSION}-slim AS runtime
 
 WORKDIR /usr/src/app