feat(alpine): add ansible-user and sudo-support

Signed-off-by: Sebastian Gumprich <rndmh3ro@users.noreply.github.com>

alpine-ansible-latest/Dockerfile

@@ -1,12 +1,23 @@
 FROM alpine:latest
 LABEL maintainer="Sebastian Gumprich"
 
-RUN apk add --no-cache ansible
+RUN apk add --no-cache ansible sudo
 
 # Install Ansible inventory file
 RUN mkdir -p /etc/ansible \
     && echo "[local]\nlocalhost ansible_connection=local" > /etc/ansible/hosts
 
+# https://molecule.readthedocs.io/en/latest/examples.html#docker-with-non-privileged-user
+# Create `ansible` user with sudo permissions and membership in `DEPLOY_GROUP`
+# This template gets rendered using `loop: "{{ molecule_yml.platforms }}"`, so
+# each `item` is an element of platforms list from the molecule.yml file for this scenario.
+ENV ANSIBLE_USER=ansible DEPLOY_GROUP=deployer SUDO_GROUP=wheel
+RUN set -xe \
+    && adduser -D ${ANSIBLE_USER} ${DEPLOY_GROUP} \
+    && addgroup ${ANSIBLE_USER} ${ANSIBLE_USER} \
+    && addgroup ${ANSIBLE_USER} ${SUDO_GROUP} \
+    && sed -i "s/^# %${SUDO_GROUP} ALL=(ALL:ALL) NOPASSWD: ALL/%${SUDO_GROUP} ALL=(ALL:ALL) NOPASSWD: ALL/" /etc/sudoers
+
 # delete file created by systemd that prevents login via ssh
 RUN rm -f /{var/run,etc,run}/nologin