macos - 如何在 Docker 容器上部署 Web 服务

Question

这是我的 Dockerfile:

#Build java web app container image
FROM ubuntu
MAINTAINER wangyao
#Make java and tomcat install directory
RUN mkdir /usr/local/java
RUN mkdir /usr/local/tomcat
#Copy jre and tomcat into image
ADD jdk1.8.0_45.jdk /usr/local/java/
ADD apache-tomcat-7.0.62 /usr/local/tomcat/
ENV JAVA_HOME=/usr/local/java/Contents/Home
CMD cd /usr/local/tomcat;./bin/catalina.sh run
#Expose http port
EXPOSE 8080

然后我构建它并尝试启动它:

wangyaos-MBP-3:flexcloud wangyao$ ls
Dockerfile      apache-tomcat-7.0.62    jdk1.8.0_45.jdk
wangyaos-MBP-3:flexcloud wangyao$ docker build -t flexcloud .
Sending build context to Docker daemon 355.6 MB
Sending build context to Docker daemon 
........
Successfully built 1f824d246b39
wangyaos-MBP-3:flexcloud wangyao$ docker run -i -t flexcloud
Using CATALINA_BASE:   /usr/local/tomcat
Using CATALINA_HOME:   /usr/local/tomcat
Using CATALINA_TMPDIR: /usr/local/tomcat/temp
Using JRE_HOME:        /usr/local/java/Contents/Home
Using CLASSPATH:        /usr/local/tomcat/bin/bootstrap.jar:/usr/local/tomcat/bin/tomcat-juli.jar
/usr/local/java/Contents/Home/bin/java: 20: /usr/local/java/Contents/Home/bin/java: Syntax error: word unexpected (expecting ")")
wangyaos-MBP-3:flexcloud wangyao$ 

word unexpected (expecting ")") 是什么意思？

我用$ ./bin/catalina.sh run 没有docker，我可以运行它，但我为什么不能在docker容器上运行它？

Answer 1

如评论中所示，错误 Syntax error: word unexpected (expecting ")")是 shell 脚本错误，这意味着 /usr/local/java/Contents/Home/bin/java实际上不是 java 可执行文件。

使用 docker exec -it <container> bash 访问容器并执行 /usr/local/java/Contents/Home/bin/java -version根据@KingOfSocket 的评论，向我们展示了实际发生的事情。