fixup, set APP_ROOT env variable

Author: jiridanek

base/ubi9-python-3.11/Dockerfile

@@ -2,10 +2,11 @@ FROM registry.access.redhat.com/ubi9/ubi:latest
 
 # perform the setup that python s2i image used to do for us
 #  but this way it uses a lot less disk space (hundreds of megabytes less)
-ENV VIRTUAL_ENV="/opt/app-root"
+ENV APP_ROOT="/opt/app-root"
+ENV VIRTUAL_ENV="${APP_ROOT}"
 ENV PATH="${VIRTUAL_ENV}/bin:${PATH}"
-RUN mkdir --parents --mode 0771 "${VIRTUAL_ENV}/src" && chown --recursive 1001:0 ${VIRTUAL_ENV} && \
-    useradd --uid 1001 --gid 0 --home-dir "${VIRTUAL_ENV}/src" \
+RUN mkdir --parents --mode 0771 "${APP_ROOT}/src" && chown --recursive 1001:0 ${APP_ROOT} && \
+    useradd --uid 1001 --gid 0 --no-create-home --home-dir "${APP_ROOT}/src" \
       --comment "Default Application User" --shell /bin/bash default && \
     dnf install -y python311-pip && dnf clean all && rm -rf /var/cache/yum/* && \
 COPY --from=quay.io/sclorg/s2i-core-c9s:latest /usr/bin/fix-permissions /usr/bin/fix-permissions