Bite the bullet and remove heredoc.

Dockerfile

@@ -20,25 +20,22 @@ WORKDIR /app
 
 RUN --mount=type=cache,target=/root/.cache/uv \
     --mount=type=bind,source=uv.lock,target=uv.lock \
-    --mount=type=bind,source=pyproject.toml,target=pyproject.toml <<EOF
-mkdir -p /app/src/staticfiles
-apk update
+    --mount=type=bind,source=pyproject.toml,target=pyproject.toml \
+mkdir -p /app/src/staticfiles & \
+apk update & \
 apk add --no-cache \
     binutils \
     libpq-dev \
     gettext \
     netcat-openbsd \
-    postgresql-client
+    postgresql-client & \
 # run uv sync --no-dev if $DJANGO_ENV is production, otherwise run uv sync
 if [ "$DJANGO_ENV" = "production" ]; then uv sync --frozen --no-install-project --no-dev; else uv sync --frozen --no-install-project; fi
-EOF
 
 COPY . .
 ENV PATH="/venv/bin:$PATH"
-RUN <<EOF
-./src/manage.py compilemessages
-./src/manage.py collectstatic --noinput
-EOF
+RUN ./src/manage.py compilemessages & \
+    ./src/manage.py collectstatic --noinput
 
 ENTRYPOINT ["/app/entrypoint.sh"]