Docker local environment launcher

.dkrenv

# Example .dkrenv file
IMAGE=ryankurte/docker-arm-embedded

dkrenv.sh

#!/bin/bash
# A very simple Virtualenv style wrapper to aleviate some of the complexity of using docker containers
# for project development.
# TODO: switch to named / non-temporal containers to allow additions to be made (with warnings!)
# Usage:
# Add a .dkrenv file to your project with IMAGE=image, then call dkrenv.sh from the appropriate
# directory to launch the appropriate instance.

cwd=`pwd`
config_file=$cwd/.dkrenv
config_file_secured=$cwd/.dkrenv_sec

# Check if file exists
if [ ! -f $config_file ]; then
    echo "$config_file not found"
    exit
fi

# Check if the file contains something we don't want
# from: http://wiki.bash-hackers.org/howto/conffile
if egrep -q -v '^#|^[^ ]*=[^;]*' "$config_file"; then
  # Filter the original to a new file
  egrep '^#|^[^ ]*=[^;&]*'  "$config_file" > "$config_file_secured"
  config_file="$config_file_secured"
fi

# Load Config
source $config_file_secured

# Check image name exists
if [ -z "$IMAGE" ]; then
    echo ".dkrenv must specify IMAGE to be used"
    exit
fi

# Launch instance
docker run --rm -it -v $cwd:/root $IMAGE /bin/bash