Revert everything except the pip fix and the branch flag

docker/1_base/Dockerfile

@@ -5,6 +5,6 @@ RUN set -ex; \
     apt-get update; \
     DEBIAN_FRONTEND=noninteractive apt-get install \
       -qyy -o APT::Install-Recommends=false -o APT::Install-Suggests=false \
-      tzdata openssl ca-certificates locales rustc python3-pip python3-setuptools python3-wheel; \
+      tzdata openssl ca-certificates locales; \
     locale-gen en_US.UTF-8 en_GB.UTF-8 nl_NL.UTF-8
 ENV LANG en_US.UTF-8