feat(R4b): reproducible builds — pin requirements.lock checksum

- Dockerfile: build-arg REQUIREMENTS_CHECKSUM verifica lo sha256 del
  lockfile (fallisce la build se non coincide; vuoto = skip locale)
- docker-compose.yml: default = hash corrente del lock
- CI: nuovo job checksum.yml che fallisce se il pin non coincide
- Fix YAML preesistente in ci.yml (name: con ':' non quotati)
- Docs: README, .env.example, review aggiornati
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truetype committed 2026-08-29 22:36:31 +02:00
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FROM python:3.12-slim-bookworm AS builder
# Build riproducibile (R4b): se REQUIREMENTS_CHECKSUM è valorizzato, la
# build fallisce se requirements.lock non coincide — nessuna dipendenza può
# cambiare senza aggiornare il pin. Genera con:
# sha256sum requirements.lock | awk '{print $1}'
ARG REQUIREMENTS_CHECKSUM=""
WORKDIR /build
COPY requirements.txt requirements.lock ./
RUN test -z "$REQUIREMENTS_CHECKSUM" \
-o "$(sha256sum requirements.lock | awk '{print $1}')" = "$REQUIREMENTS_CHECKSUM" \
|| { echo "FATAL: requirements.lock non corrisponde a REQUIREMENTS_CHECKSUM" >&2; exit 1; }
RUN python -m venv /opt/venv \
&& /opt/venv/bin/pip install --no-cache-dir --upgrade pip \
&& /opt/venv/bin/pip install --no-cache-dir -r requirements.lock