#!/bin/bash # no verbose set +x # config envFilename='.env.production' resolvingPath='/usr/share/nginx/html' function apply_path { # read all config file while read line; do # no comment or not empty if [ "${line:0:1}" == "#" ] || [ "${line}" == "" ]; then echo "Skiped line $line" continue fi # split configName="$(cut -d'=' -f1 <<<"$line")" configValue="$(cut -d'=' -f2 <<<"$line")" # get system env envValue=$(env | grep "^$configName=" | grep -oP '(?!=)(?<==).*$'); if [ -z "$configValue" ]; then echo "Empty env value met: $configName:$configValue" fi # if config found if [ -n "$configValue" ] && [ -n "$envValue" ]; then # replace all echo "Replace: ${configValue} with: ${envValue}" find $resolvingPath \( -type d -name .git -prune \) -o -type f -print0 | xargs -0 sed -i "s#$configValue#$envValue#g" fi done < $envFilename } apply_path echo "Starting React Application" exec "$@"