pre-commit.sh

#!/bin/bash

# checks if locally staged changes are
# formatted properly. Ignores non-staged
# changes.
# Intended as git pre-commit hook

#COLOR CODES:
#tput setaf 3 = yellow -> Info
#tput setaf 1 = red -> warning/not allowed commit
#tput setaf 2 = green -> all good!/allowed commit

echo ""
echo "$(tput setaf 3)Running pre-commit hook ... (you can omit this with --no-verify, but don't)$(tput sgr 0)"

# get current version----------
version=`cat Dockerfile | grep -e 'ARG CORE_VERSION='`
while IFS='=' read -ra ADDR; do
    counter=0
    for i in "${ADDR[@]}"; do
        if [ $counter == 1 ]
        then
            version=$i
        fi
        counter=$(($counter+1))
    done
done <<< "$version"

# get git branch name-----------

branch_name="$(git symbolic-ref HEAD 2>/dev/null)" ||
branch_name="(unnamed branch)"     # detached HEAD

branch_name=${branch_name##refs/heads/}


# check if branch is correct based on the version-----------
if [ $branch_name == "master" ]
then
	YELLOW='\033[1;33m'
	NC='\033[0m' # No Color
	printf "${YELLOW}committing to MASTER${NC}\n"
elif [[ $version == $branch_name* ]]
then
	continue=1
elif ! [[ $branch_name =~ ^[0-9]+.[0-9]+$ ]]
then
	YELLOW='\033[1;33m'
	NC='\033[0m' # No Color
    printf "${YELLOW}Not committing to master or version branches${NC}\n"
else
	RED='\033[0;31m'
	NC='\033[0m' # No Color
	printf "${RED}Pushing to wrong branch. Stopping commit${NC}\n"
	exit 1
fi