set default locations for ini file, conf files and extensions

Author: henderkes

static-builder-gnu.Dockerfile

@@ -112,8 +112,9 @@ ENV SPC_LIBC='glibc'
 ENV SPC_CMD_VAR_PHP_MAKE_EXTRA_LDFLAGS_PROGRAM='-Wl,-O3 -pie'
 ENV SPC_CMD_VAR_PHP_MAKE_EXTRA_LIBS='-ldl -lpthread -lm -lresolv -lutil -lrt'
 ENV SPC_OPT_DOWNLOAD_ARGS='--ignore-cache-sources=php-src'
-ENV SPC_OPT_BUILD_ARGS=''
+ENV SPC_OPT_BUILD_ARGS='--with-config-file-path=/etc/frankenphp/php.ini --with-config-file-scan-dir=/etc/frankenphp/php.d'
 ENV SPC_REL_TYPE='binary'
+ENV EXTENSION_DIR='/usr/lib64/frankenphp/modules'
 
 # not sure if this is needed
 ENV COMPOSER_ALLOW_SUPERUSER=1