watchDocker

#! /bin/bash
# You need to set environment variable $ANARCHY to your Node-RED credential secret.

# Always start by getting latest copy.
old_rev="none"
#old_rev=`git log -1 --pretty="%H"`

# Get directory name as project name for name of docker image
thisdir="$(basename "$(pwd)")"

while [ 1 ]; do
    new_rev=`git ls-remote "$(git config --get remote.origin.url)" HEAD | cut -f 1`
    if [ $new_rev != $old_rev ]; then
        old_rev=$new_rev
        echo "SHA now "$old_rev

        # force overwrite of local files with remote
        git fetch --all
        git reset --hard origin/master

        # re-build docker image
        docker build -t $thisdir .
        # stop and remove existing
        docker stop my_$thisdir
        docker rm my_$thisdir
        # restart new
        docker run -d -p 1880:1880 -e NODE_RED_CREDENTIAL_SECRET=$ANARCHY --name my_$thisdir $thisdir
    fi
    sleep 60
done