Question

嗨，我是docker和docker-compose的新手。

这是我的docker-compose

version: "2.1"
services:
  licenseserver:
   build:
    context: ./licenseserver
    dockerfile: .dockerfile
   ports:
       - "20000:20000"
   mac_address: C8-D9-D2-A5-8F-DE
   hostname: idol

dockerfile内容

FROM ubuntu:18.04

RUN apt-get update
RUN apt-get install unzip
RUN mkdir /opt/MicroFocus

WORKDIR /opt/MicroFocus
ADD LicenseServer.zip /opt/MicroFocus
RUN chmod 777 LicenseServer.zip
RUN unzip LicenseServer.zip
RUN rm -f LicenseServer.zip


WORKDIR /opt/MicroFocus/LicenseServer_12.5.0_LINUX_X86_64
ADD idol.dat /opt/MicroFocus/LicenseServer_12.5.0_LINUX_X86_64
RUN ls -lart
RUN pwd
RUN ./start-licenseserver.sh

docker-compose构建工作正常，但是当我运行docker-compose时，得到以下信息。如何确保容器继续运行。

root@development-vm:/home/vinay/docker/AT# docker-compose up
Starting at_licenseserver_1 ... done
Attaching to at_licenseserver_1
at_licenseserver_1 exited with code 0
root@development-vm:/home/vinay/docker/AT# docker-compose exec licenseserver bash
ERROR: No container found for licenseserver_1

start-licenseserver.sh的内容如下

#!/bin/sh
LD_LIBRARY_PATH=./:../bin:./ffmpeg:./filters:$LD_LIBRARY_PATH
export LD_LIBRARY_PATH
clear
echo "--------------------------------------------------------------------"
echo "Micro Focus License Server"
echo "(c) 1999-2018 Micro Focus"
echo "--------------------------------------------------------------------"
echo "This script will start License Server"
echo "(licenseserver.exe)"
echo ""
echo "Hit return to continue"
echo "Hit Ctrl-C to end this script now!"
echo "--------------------------------------------------------------------"
read DUMMY
echo "Starting License Server..."
chmod u+x licenseserver.exe
nohup $PWD/licenseserver.exe > licenseserver.out 2> licenseserver.err &
serverpid=$!
echo "Started License Server with PID $serverpid"
exit

Answer 1

您应该将Dockerfile更改为仅在构建Docker映像时使用CMD命令，而不使用RUN，RUN命令。 docker希望您的容器运行entrypoint或command，并且它必须是后台进程，例如Web服务器。检查此article关于RUN，CMD和entrypoint的区别将您的Dockerfile更改为此，然后尝试再次运行它：

FROM ubuntu:18.04

RUN apt-get update
RUN apt-get install unzip
RUN mkdir /opt/MicroFocus

WORKDIR /opt/MicroFocus
ADD LicenseServer.zip /opt/MicroFocus
RUN chmod 777 LicenseServer.zip
RUN unzip LicenseServer.zip
RUN rm -f LicenseServer.zip


WORKDIR /opt/MicroFocus/LicenseServer_12.5.0_LINUX_X86_64
ADD idol.dat /opt/MicroFocus/LicenseServer_12.5.0_LINUX_X86_64
RUN ls -lart
RUN pwd
CMD ["start-licenseserver.sh"]

容器退出，并显示以下消息Docker容器退出，代码为0

1 个答案: