Shell/bash boilerplate for running commands in docker

run-in-docker.sh

#!/bin/sh

# Setup container
##################################
CONTAINER_NAME="tempcontainer"
CONTAINER_BASE_IMAGE="amazonlinux:2"

(docker kill $CONTAINER_NAME && docker rm $CONTAINER_NAME) || echo Nothing to kill from previous run, starting a fresh install

SELINUX_SUFFIX=""
if [ -x "/sbin/sestatus" ]; then
  /sbin/sestatus | grep -P "SELinux status:\s+enabled" >/dev/null
  if [ $? -eq 0 ]; then
    SELINUX_SUFFIX=":z"
  fi
fi

docker run -d -it --name $CONTAINER_NAME \
  -v `pwd`:/opt${SELINUX_SUFFIX} \
  $CONTAINER_BASE_IMAGE bash

RUN="docker exec $CONTAINER_NAME"

# Run commands in docker with $RUN
##################################
$RUN echo HELLO WORLD

# Kill container
##################################
(docker kill $CONTAINER_NAME && docker rm $CONTAINER_NAME) || echo Nothing to kill from previous run, starting a fresh install