Dockerfile now is properly set up to run tests in a rootless container (#11)

* Dockerfile now is properly set up to run tests in a rootless container

* Keep docker as default

ci/Dockerfile

@@ -1,14 +1,33 @@
 FROM registry.access.redhat.com/ubi8/ubi
 
-RUN yum install -y make python3 python3-devel python3-pip python3-setuptools \
+ENV OPERATOR=/usr/local/bin/ansible-operator \
+    USER_UID=1001 \
+    USER_NAME=ansible-operator\
+    HOME=/opt/ansible \
+    ANSIBLE_LOCAL_TMP=/opt/ansible/tmp
+
+RUN yum install -y \
+      glibc-langpack-en \
+      git \
+      make \
+      python3 \
+      python3-devel \
+      python3-pip \
+      python3-setuptools \
  && pip3 install --upgrade setuptools pip \
  && pip3 install \
       openshift \
       ansible \
       molecule
 
-WORKDIR /src
+COPY . /opt/ansible
 
-COPY . /src
+WORKDIR /opt/ansible
 
-USER 1001
+RUN echo "${USER_NAME}:x:${USER_UID}:0:${USER_NAME} user:${HOME}:/sbin/nologin" >> /etc/passwd \
+ && mkdir -p "${HOME}/.ansible/tmp" \
+ && chown -R "${USER_UID}:0" "${HOME}" \
+ && chmod -R ug+rw "${HOME}"
+
+
+USER ${USER_UID}