diff --git a/README.md b/README.md
index c62cf3c8..c5fc66ee 100644
--- a/README.md
+++ b/README.md
@@ -200,13 +200,7 @@ git submodule update --init
 
 ## 编译(iOS)
 - 编译环境:`请参考macOS的编译指导。`
-- 编译
-  
-  ```
-  cd ZLMediaKit
-  ./build_for_ios.sh
-  ```
-- 你也可以生成Xcode工程再编译,[了解更多](https://github.com/leetal/ios-cmake):
+- 生成Xcode工程再编译,[了解更多](https://github.com/leetal/ios-cmake):
 
   ```
   cd ZLMediaKit
@@ -243,6 +237,19 @@ git submodule update --init
    4 选择编译Release 版本.
    5 找到目标文件并运行测试用例.
 ```
+
+## Docker Image
+You can pull a pre-built docker image from Docker Hub and run with
+```bash
+docker run -id -p 1935:1935 -p 8080:80 gemfield/zlmediakit
+```
+
+Dockerfile is also supplied to build images on Ubuntu 16.04
+```bash
+cd docker
+docker build -t zlmediakit .
+```
+
 ## 使用方法
 - 作为服务器：
 	```cpp
diff --git a/README_en.md b/README_en.md
index 20d908e6..d9947c01 100644
--- a/README_en.md
+++ b/README_en.md
@@ -176,14 +176,6 @@ git submodule update --init
   ```
 
 ### Build on iOS
-
-  This build method is no longer recommended.It is recommended that make Xcode project by yourself.
-
-- My environment
-
-  Same with Build on macOS
-
-  
 - You can generate Xcode projects and recompile them , [learn more](https://github.com/leetal/ios-cmake):
 
   ```
diff --git a/api/CMakeLists.txt b/api/CMakeLists.txt
index ff5db73e..9cdb0d83 100644
--- a/api/CMakeLists.txt
+++ b/api/CMakeLists.txt
@@ -1,24 +1,28 @@
 include_directories(include source)
+
 file(GLOB api_src_list include/*.h source/*.cpp source/*.h source/*.c)
-add_library(mk_api SHARED ${api_src_list})
+if (IOS)
+    add_library(mk_api STATIC ${api_src_list})
+    target_link_libraries(mk_api ${LINK_LIB_LIST})
+else ()
+    add_library(mk_api SHARED ${api_src_list})
+    if (WIN32)
+        add_definitions(-DMediaKitApi_EXPORTS)
+    endif ()
 
-if(WIN32)
-    add_definitions(-DMediaKitApi_EXPORTS)
-endif()
+    target_link_libraries(mk_api ${LINK_LIB_LIST})
+    add_subdirectory(tests)
 
-target_link_libraries(mk_api ${LINK_LIB_LIST})
-add_subdirectory(tests)
-
-#安装目录
-if(WIN32)
-    set(INSTALL_PATH_LIB $ENV{HOME}/${CMAKE_PROJECT_NAME}/lib)
-    set(INSTALL_PATH_INCLUDE $ENV{HOME}/${CMAKE_PROJECT_NAME}/include)
-else()
-    set(INSTALL_PATH_LIB lib)
-    set(INSTALL_PATH_INCLUDE include)
-endif()
-
-file(GLOB api_header_list include/*.h)
-install(FILES ${api_header_list} DESTINATION ${INSTALL_PATH_INCLUDE})
-install(TARGETS mk_api ARCHIVE DESTINATION ${INSTALL_PATH_LIB} LIBRARY DESTINATION ${INSTALL_PATH_LIB})
+    #安装目录
+    if (WIN32)
+        set(INSTALL_PATH_LIB $ENV{HOME}/${CMAKE_PROJECT_NAME}/lib)
+        set(INSTALL_PATH_INCLUDE $ENV{HOME}/${CMAKE_PROJECT_NAME}/include)
+    else ()
+        set(INSTALL_PATH_LIB lib)
+        set(INSTALL_PATH_INCLUDE include)
+    endif ()
 
+    file(GLOB api_header_list include/*.h)
+    install(FILES ${api_header_list} DESTINATION ${INSTALL_PATH_INCLUDE})
+    install(TARGETS mk_api ARCHIVE DESTINATION ${INSTALL_PATH_LIB} LIBRARY DESTINATION ${INSTALL_PATH_LIB})
+endif ()
\ No newline at end of file
diff --git a/build_for_ios.sh b/build_for_ios.sh
deleted file mode 100755
index c7bf929b..00000000
--- a/build_for_ios.sh
+++ /dev/null
@@ -1,13 +0,0 @@
-#!/bin/bash
-cd ..
-git clone --depth=1 https://github.com/xiongziliang/ZLMediaKit.git
-cd ZLMediaKit
-git submodule init
-git submodule update
-
-mkdir -p ios_build
-rm -rf ./build
-ln -s ./ios_build build
-cd ios_build
-cmake .. -DCMAKE_TOOLCHAIN_FILE=../cmake/iOS.cmake -DIOS_PLATFORM=OS
-make -j4