I installed opencpu Docker image using 

`docker pull opencpu/ubuntu-16.04`. 

The very first time it starts sucessfully. But if I terminate the process and try to start it again using command

```
docker run -it imageID

```

It gets terminated each time. Need suggestion about how to start it successfully.

```
    Desktop$ docker run -it d98852787b8e
AH00558: apache2: Could not reliably determine the server's fully qualified domain name, using 172.17.0.4. Set the 'ServerName' directive globally to suppress this message
[Thu Mar 08 06:34:52.836970 2018] [ssl:warn] [pid 11] AH01909: 172.17.0.4:443:0 server certificate does NOT include an ID which matches the server name
AH00558: apache2: Could not reliably determine the server's fully qualified domain name, using 172.17.0.4. Set the 'ServerName' directive globally to suppress this message
[Thu Mar 08 06:34:52.849109 2018] [ssl:warn] [pid 11] AH01909: 172.17.0.4:443:0 server certificate does NOT include an ID which matches the server name
[Thu Mar 08 06:34:52.849219 2018] [core:warn] [pid 11] AH00098: pid file /var/run/apache2/apache2.pid overwritten -- Unclean shutdown of previous Apache run?
[Thu Mar 08 06:34:52.851132 2018] [mpm_prefork:notice] [pid 11] AH00163: Apache/2.4.18 (Ubuntu) mod_R/1.2.7 R/3.2.2 OpenSSL/1.0.2g mod_apreq2-20090110/2.8.0 configured -- resuming normal operations
[Thu Mar 08 06:34:52.851152 2018] [core:notice] [pid 11] AH00094: Command line: '/usr/sbin/apache2 -D FOREGROUND'
[Thu Mar 08 06:34:52.872738 2018] [mpm_prefork:notice] [pid 11] AH00170: caught SIGWINCH, shutting down gracefully
Using locale: en_US.UTF-8 
Using locale: en_US.UTF-8 
AppArmor not available. Running OpenCPU without security profile but with rlimits.
Using locale: en_US.UTF-8 
AppArmor not available. Running OpenCPU without security profile but with rlimits.
AppArmor not available. Running OpenCPU without security profile but with rlimits.
Using locale: en_US.UTF-8 
Using locale: en_US.UTF-8 
AppArmor not available. Running OpenCPU without security profile but with rlimits.
AppArmor not available. Running OpenCPU without security profile but with rlimits.
Loading config from /usr/lib/opencpu/library/opencpu/config/defaults.conf
Loading config from /usr/lib/opencpu/library/opencpu/config/defaults.conf
Loading config from /etc/opencpu/server.conf
Loading config from /usr/lib/opencpu/library/opencpu/config/defaults.conf
Loading config from /etc/opencpu/server.conf
Loading config from /usr/lib/opencpu/library/opencpu/config/defaults.conf
OpenCPU cloud server ready.
OpenCPU cloud server ready.
Loading config from /etc/opencpu/server.conf
Loading config from /etc/opencpu/server.conf
OpenCPU cloud server ready.
OpenCPU cloud server ready.
Loading config from /usr/lib/opencpu/library/opencpu/config/defaults.conf
Loading config from /etc/opencpu/server.conf
OpenCPU cloud server ready.
rserver[8]: ERROR system error 10 (No child processes); OCCURRED AT: rstudio::core::Error rstudio::server::app_armor::enforceRestricted() /home/ubuntu/rstudio/src/cpp/server/ServerAppArmor.cpp:90; LOGGED FROM: int main(int, char* const*) /home/ubuntu/rstudio/src/cpp/server/ServerMain.cpp:513
Terminated

```