docker: Error response from daemon: driver failed programming external connectivity on endpoint chend-mysql (d15ea15a42d2db07bc2e99d3101c9f1a97a4d370e544d53282969c3b8e03c8d0): Error starting userland proxy: Bind for 0.0.0.0:3306: unexpected error Permission denied.；
最后发现就是本地mysql服务自动打开了，与docker的冲突了，使docker的mysql服务无法映射到本地了，所以解决自然是把本地的mysql服务关闭就行了
docker: Error response from daemon: Conflict. The container name "/chend-mysql" is already in use by container "ec8e623f54fb2f8b48ac47fd3c9e0e76647cb3eff40794b70dee0e8e397888d4". You have to remove (or rename) that container to be able to reuse that name.
See 'docker run --help'.
这个容器名称已经存在 只要将ec8e623f54fb2f8b48ac47fd3c9e0e76647cb3eff40794b70dee0e8e397888d4 删掉就可以了
docker rm ec8e623f54fb2f8b48ac47fd3c9e0e76647cb3eff40794b70dee0e8e397888d4 ；