Fix Dockerfile-tools for local build

Dockerfile-tools

@@ -1,24 +1,32 @@
-FROM python:3.6-alpine
+# Use base UBI image
+FROM registry.access.redhat.com/ubi8/ubi
 
 WORKDIR /app
 
 COPY requirements.txt /tmp/requirements.txt
-RUN apk --update add python py-pip openssl ca-certificates py-openssl wget bash linux-headers
-RUN apk --update add --virtual build-dependencies libffi-dev openssl-dev python-dev py-pip build-base \
-  && pip install --upgrade pip \
-  && pip install --upgrade -r /tmp/requirements.txt \
-  && apk del build-dependencies
+
+# Install python3
+RUN yum -y install --disableplugin=subscription-manager python36 \
+  && yum --disableplugin=subscription-manager clean all
+
+RUN yum -y install --disableplugin=subscription-manager python3-pip wget \
+  && yum --disableplugin=subscription-manager clean all
+
+RUN pip3 install --upgrade -r /tmp/requirements.txt
+
+# Update python command to point to python3 install
+RUN alternatives --set python /usr/bin/python3
+
 ENV FLASK_APP=server/__init__.py
 ENV FLASK_DEBUG=true
 
 COPY . /app
 COPY run-dev /bin
 RUN chmod 777 /bin/run-dev
 
-
 ARG bx_dev_user=root
 ARG bx_dev_userid=1000
 
 RUN BX_DEV_USER=$bx_dev_user
 RUN BX_DEV_USERID=$bx_dev_userid
-RUN if [ "$bx_dev_user" != root ]; then adduser -D -s /bin/bash -u $bx_dev_userid $bx_dev_user; fi
+RUN if [ "$bx_dev_user" != root ]; then useradd -ms /bin/bash -u $bx_dev_userid $bx_dev_user; fi