feat: revert to scratch

Author: pieterlukasse

Dockerfile

@@ -33,8 +33,7 @@ RUN GITCOMMIT=$(git rev-parse HEAD) \
 
 COPY tests/data_generator/example_test_data_config2.yaml /example_dataset.yaml
 
-FROM alpine
-RUN apk add --no-cache bash
+FROM scratch
 COPY --from=builder /etc/pki/ca-trust/extracted/pem/tls-ca-bundle.pem /etc/ssl/certs/ca-certificates.crt
 COPY --from=builder /cohort-middleware /cohort-middleware
 COPY --from=builder /data-generator /data-generator