Update dockerfile to collect static files at build time

Dockerfile

@@ -1,6 +1,10 @@
-## Build venv
+##############################################
+# Build virtualenv
+##############################################
 FROM python:3.10.1-buster AS venv
 
+# Prepare system
+##############################################
 # https://python-poetry.org/docs/#installation
 ENV POETRY_VERSION=1.1.11
 RUN curl -sSL https://raw.githubusercontent.com/python-poetry/poetry/master/install-poetry.py | python -
@@ -9,12 +13,28 @@ ENV PATH /root/.local/bin:$PATH
 
 WORKDIR /app
 
+# Install python dependencies
+##############################################
 COPY pyproject.toml poetry.lock ./
 
 RUN python -m venv --copies /app/venv \
     && . /app/venv/bin/activate \
     && poetry install --no-dev
 
+# Collect static files & build assets
+##############################################
+ENV PATH /app/venv/bin:$PATH
+WORKDIR /app/src
+COPY ./src ./
+
+# Build assets so that we don't need the build tools later
+RUN python manage.py collectstatic --noinput --clear
+
+
+
+##############################################
+# write git info
+##############################################
 
 ## Get git versions
 FROM alpine/git:v2.30.2 AS git
@@ -23,7 +43,10 @@ WORKDIR /app
 RUN git rev-parse HEAD | tee /version
 
 
-## Beginning of runtime image
+
+##############################################
+# Main image
+##############################################
 FROM python:3.10.1-slim-buster as prod
 
 RUN echo "Europe/Paris" > /etc/timezone
@@ -37,6 +60,8 @@ COPY pyproject.toml ./
 COPY contrib/run ./run
 COPY src ./src/
 COPY --from=git /version /app/.version
+ARG STATIC_ROOT=/app/src/staticfiles
+COPY --chown=django:django --from=venv $STATIC_ROOT $STATIC_ROOT
 
 HEALTHCHECK --start-period=30s CMD python -c "import requests; requests.get('http://localhost:8000', timeout=2)"
 

src/shortener/settings.py

@@ -131,7 +131,7 @@ USE_TZ = True
 
 STATIC_URL = "/static/"
 STATICFILES_STORAGE = "whitenoise.storage.CompressedManifestStaticFilesStorage"
-STATIC_ROOT = os.path.join(BASE_DIR, "staticfiles")
+STATIC_ROOT = BASE_DIR / "staticfiles"
 
 # Default primary key field type
 # https://docs.djangoproject.com/en/3.2/ref/settings/#default-auto-field