Swoole support php5 (#1571)

* php5 fpm support swoole
* php5 workspace support swoole

workspace/Dockerfile

@@ -305,7 +305,11 @@ ARG PHP_VERSION=${PHP_VERSION}
 
 RUN if [ ${INSTALL_SWOOLE} = true ]; then \
     # Install Php Swoole Extension
-    pecl -q install swoole && \
+    if [ $(php -r "echo PHP_MAJOR_VERSION;") = "5" ]; then \
+      pecl -q install swoole-2.0.11; \
+    else \
+      pecl -q install swoole; \
+    fi && \
     echo "extension=swoole.so" >> /etc/php/${PHP_VERSION}/mods-available/swoole.ini && \
     ln -s /etc/php/${PHP_VERSION}/mods-available/swoole.ini /etc/php/${PHP_VERSION}/cli/conf.d/20-swoole.ini \
 ;fi