Fix PHP-FPM 5.3 env variables

Dockerfiles/prod/data/docker-entrypoint.d/37-fix-php-5.3-env-vars.sh

@@ -0,0 +1,47 @@
+#!/usr/bin/env bash
+#
+# PHP FPM 5.3 does not allow to pass through environment variables
+# This is a hacky shell script to create:
+#   env[NAME]='VALUE' entries for PHP FPM config out of all current env vars
+
+
+# Check if an environment variable is valid
+# for PHP-FPM config and if yes return it
+_get_env_php_fpm() {
+	local name="${1}"
+	local env=
+
+	# Not set
+	if ! printenv "${name}" >/dev/null 2>&1; then
+		return 1
+	fi
+
+	# Empty variables are not supported by PHP-FPM config syntax
+	env="$( printenv "${name}" )"
+	if [ -z "${env}" ]; then
+		return 1
+	fi
+
+	# Values containing a = are not supported by PHP-FPM config syntax
+	if echo "${env}" | grep -q '='; then
+		return 1
+	fi
+
+	echo "${env}"
+}
+
+# Write all valid environment variables to a PHP-FPM config
+set_env_php_fpm() {
+	local config="${1}"
+
+	# Clear file
+	echo "[www]" > "${config}"
+
+	# Append env variables
+	for name in $(printenv | awk -F'=' '{print $1}'); do
+
+		if _get_env_php_fpm "${name}" >/dev/null 2>&1; then
+			echo "env[${name}]='$( _get_env_php_fpm "${name}" )'" >> "${config}"
+		fi
+	done
+}