docker容器无法访问通过挂载点/my/project/dir
访问的jar文件。
我确定这不是权限问题,因为我在本地更改了访问权限,因此它应该能够读/写/执行它。
这是Dockerfile
:
FROM tomcat:9-jre8
RUN apt-get update && apt-get install librrds-perl rrdtool -y
VOLUME ["/data/rrdtool", "/my/project/dir"]
ENTRYPOINT [ "java","-jar","/my/project/dir/build/libs/spring-project-0.1.0.jar" ]
这是docker-compose.yml
文件:
version: '2'
services:
db:
container_name: db1
image: mysql:8
restart: always
environment:
MYSQL_ROOT_PASSWORD: password123
MYSQL_USER: user123
MYSQL_PASSWORD: pasw
MYSQL_DATABASE: mydb
expose:
- "3307"
db2:
container_name: db2
image: mysql:8
restart: always
environment:
MYSQL_ROOT_PASSWORD: password123
MYSQL_USER: user123
MYSQL_PASSWORD: pasw
MYSQL_DATABASE: mydb2
expose:
- "3308"
spring:
container_name: spring-boot-project
build:
context: ./
dockerfile: Dockerfile
links:
- db:db1
- db2:db2
depends_on:
- db
- db2
expose:
- "8081"
ports:
- "8081:8081"
restart: always
这是docker-compose logs spring
的输出:
Error: Unable to access jarfile /my/project/dir/build/libs/spring-project-0.1.0.jar
答案 0 :(得分:1)
我没有看到你在任何地方将jar
复制到容器中。您应该尝试将VOLUME
声明从Dockerfile
移至compose
文件,转移到spring
服务中,如下所示:
volumes:
- /my/project/dir:/app
然后在Dockerfile中你应该指向dir:
ENTRYPOINT [ "java","-jar","/app/build/libs/spring-project-0.1.0.jar" ]
如果您想要部署它(例如),您应该将项目文件直接复制到图像中,而不是使用volumes
方法。所以在Dockerfile
中,您可以这样做:
COPY . /app
而不是VOLUME [..]
全部放在一起:
<强>发展:强>
Dockerfile:
FROM tomcat:9-jre8
RUN apt-get update && apt-get install librrds-perl rrdtool -y
ENTRYPOINT [ "java","-jar","/app/build/libs/spring-project-0.1.0.jar" ]
撰写文件:
version: '2'
services:
[..]
spring:
container_name: spring-boot-project
build: .
links:
- db:db1
- db2:db2
depends_on:
- db
- db2
ports:
- "8081:8081"
restart: always
volumes:
- /my/project/dir:/app
<强>部署:强>
Dockerfile(放置在项目文件夹中,docker build要求它的构建上下文位于当前目录中):
FROM tomcat:9-jre8
RUN apt-get update && apt-get install librrds-perl rrdtool -y
COPY . /app
ENTRYPOINT [ "java","-jar","/app/build/libs/spring-project-0.1.0.jar" ]
撰写文件:
version: '2'
services:
[..]
spring:
container_name: spring-boot-project
build: .
links:
- db:db1
- db2:db2
depends_on:
- db
- db2
expose:
- "8081"