如何在后台使用Dockerfile中的自定义入口点运行docker容器

我已经创建了下面的docker

内容包括

当我从docker文件构建docker映像时，它是否已成功创建。 然后我使用下面的命令将docker映像作为容器运行

 docker run -d --name ethereum-ubuntu-geth-node2 ethereum-ubuntu-geth-node2

它创建容器并立即退出容器。我并不期望这样，因为我正在守护进程模式下运行容器（它应该在后台运行）

以下是容器状态

$ docker ps -a
CONTAINER ID        IMAGE                        COMMAND                  
CREATED             STATUS                    PORTS               
NAMES
0d25a5e71449        ethereum-ubuntu-geth-node2   "entry-point.sh"         
4 seconds ago       Exited (0) 1 second ago                       
ethereum-ubuntu-geth-node2

下面是容器日志的输出

$ docker logs ethereum-ubuntu-geth-node2
WARN [09-28|00:32:28] No etherbase set and no accounts found as default 
INFO [09-28|00:32:28] Allocated cache and file handles         database=/home/ubuntu/eth-dev/geth/chaindata cache=16 handles=16
INFO [09-28|00:32:28] Writing custom genesis block 
INFO [09-28|00:32:28] Successfully wrote genesis state         database=chaindata                           hash=a3c5c1…d6926b
INFO [09-28|00:32:28] Allocated cache and file handles         database=/home/ubuntu/eth-dev/geth/lightchaindata cache=16 handles=16
INFO [09-28|00:32:28] Writing custom genesis block 
INFO [09-28|00:32:28] Successfully wrote genesis state         database=lightchaindata                           hash=a3c5c1…d6926b
Welcome to the Geth JavaScript console!

instance: Geth/v1.7.1-unstable/linux-amd64/go1.9
modules: admin:1.0 debug:1.0 eth:1.0 miner:1.0 net:1.0 personal:1.0 
rpc:1.0 txpool:1.0 web3:1.0

下面是docker运行交互输出的输出

$ docker run -it --name ethereum-ubuntu-geth-node2 ethereum-ubuntu-geth-node2
WARN [09-28|00:45:28] No etherbase set and no accounts found as default 
INFO [09-28|00:45:28] Allocated cache and file handles         database=/home/ubuntu/eth-dev/geth/chaindata cache=16 handles=16
INFO [09-28|00:45:28] Writing custom genesis block 
INFO [09-28|00:45:28] Successfully wrote genesis state         database=chaindata                           hash=a3c5c1…d6926b
INFO [09-28|00:45:28] Allocated cache and file handles         database=/home/ubuntu/eth-dev/geth/lightchaindata cache=16 handles=16
INFO [09-28|00:45:28] Writing custom genesis block 
INFO [09-28|00:45:28] Successfully wrote genesis state         database=lightchaindata                           hash=a3c5c1…d6926b
Welcome to the Geth JavaScript console!

instance: Geth/v1.7.1-unstable/linux-amd64/go1.9
modules: admin:1.0 debug:1.0 eth:1.0 miner:1.0 net:1.0 personal:1.0 
rpc:1.0 txpool:1.0 web3:1.0

> 

现在，当我检查容器状态时，它已启动

$ docker ps -a
CONTAINER ID        IMAGE                        COMMAND                  
CREATED             STATUS                  PORTS                                 
NAMES
e27de43da867        ethereum-ubuntu-geth-node2   "entry-point.sh"         
12 seconds ago      Up 11 seconds           8545-8546/tcp, 30303/tcp, 
30303/udp   ethereum-ubuntu-geth-node2

下面是我的docker详细信息

$ docker version
 Client:
 Version:      17.09.0-ce-rc2
 API version:  1.32
 Go version:   go1.8.3
 Git commit:   363a3e7
 Built:        Thu Sep 14 02:01:59 2017
 OS/Arch:      linux/amd64

Server:
 Version:      17.09.0-ce-rc2
 API version:  1.32 (minimum version 1.12)
 Go version:   go1.8.3
 Git commit:   363a3e7
 Built:        Thu Sep 14 02:03:24 2017
 OS/Arch:      linux/amd64
 Experimental: false

---

一旦容器启动，我想在shell中执行一些

geth

utilities命令，一旦我退出shell，我仍然希望容器能够运行。我可以这样做吗？

您可以运行一个同时定义和分离了stdin的容器。不过，最好将应用程序配置为在前台作为服务器运行，而不需要stdin

$ docker run -itd \
  --name ethereum-ubuntu-geth-node2 \
  ethereum-ubuntu-geth-node2

---

对我试过了。但是我没有得到交互式shell。容器是否立即退出？实际上我想做一些

geth

实用程序，然后退出shell，但容器要运行。我可以这样做吗？容器是一种运行带有附加隔离（名称空间和cgroup）的进程的方法。如果您退出入口点，那么您已经退出了流程，并且不再有正在运行的容器。

$ docker version
 Client:
 Version:      17.09.0-ce-rc2
 API version:  1.32
 Go version:   go1.8.3
 Git commit:   363a3e7
 Built:        Thu Sep 14 02:01:59 2017
 OS/Arch:      linux/amd64

Server:
 Version:      17.09.0-ce-rc2
 API version:  1.32 (minimum version 1.12)
 Go version:   go1.8.3
 Git commit:   363a3e7
 Built:        Thu Sep 14 02:03:24 2017
 OS/Arch:      linux/amd64
 Experimental: false

$ docker run -itd \
  --name ethereum-ubuntu-geth-node2 \
  ethereum-ubuntu-geth-node2