CODEWITHSUNDEEP
dockerdocker-composedockerfile
shriyash Lakhe
shriyash Lakhe

Reputation: 607

how to get the folder from one container to another container using docker compose

I am using Docker Compose for multi-container application I have two docker-files one for tomcat and one for ant first tomcat docker file build successfully and when the ant docker-file build my application it required tomcat/lib folder and tomcat/webapps which is present in another container so how i get the tomcat folder present in tomcat container in ant container so that my application will build successfully

now i am getting an error

tomcat/lib not found...

my docker-compose.yml :

version: '3'     
services:   
  ant:   
    build:         
      context: "."   
      dockerfile: dockerfile_ant      
    container_name: ant-container      
    volumes:
      - ant:/usr/local/tomcat:ro      
    links:
      - tomcat
    ports:
      - "8080:8080"      
  tomcat:    
    build:    
      context: "."
      dockerfile: dockerfile_tomcat    
    container_name: tomcat-container    
    volumes:     
      - ant:/usr/local/tomcat:rw          
    expose:   
      - 80   

volumes:   
  ant:

my dockerfile_ant:

FROM openjdk:6

MAINTAINER shri

ENV ANT_HOME /usr/local/ant   
ENV PATH ${PATH}:/usr/local/ant/bin    
ENV ANT_OPTS=-Dfile.encoding=cp1252    

ADD apache-ant-1.7.0 /usr/local/ant

ADD TemplateUI /usr/local/TemplateUI

WORKDIR /usr/local/TemplateUI    
ENV JAVA_TOOL_OPTIONS=-Dfile.encoding=cp1252

RUN ant

My dockerfile_tomcat:

FROM tomcat:6

ENV CATALINA_HOME /usr/local/tomcat  
ENV PATH $CATALINA_HOME/bin:$PATH  

RUN mkdir -p "$CATALINA_HOME"  

VOLUME ant

WORKDIR /usr/local/tomcat   

EXPOSE 8009

Please guide us in which way you can run your multi-container application using docker compose .

Thanks shriyash

Upvotes: 3

Views: 4895

Answers (2)

shriyash Lakhe
shriyash Lakhe

Reputation: 607

this is the docker-compose.yml:-

version: '3.2'   
services:    
  ant:   
    build:        
      context: "."   
      dockerfile: dockerfile_ant  
    container_name: ant-container  
    links:  
     - tomcat   
    volumes:  
      - ant:/usr/local/tomcat:rw     
    ports:  
      - "8080:8080"        
  tomcat:   
    build:    
      context: "."  
      dockerfile: dockerfile_tomcat   
    container_name: tomcat-container   
    restart: always   
    volumes:   
      - ant:/usr/local/tomcat:rw   
    expose:   
      - 80   
volumes:     
  ant: {}

and no need to specify volume in ant-dockerfile and tomcat-dockerfile

Upvotes: 3

vivekyad4v
vivekyad4v

Reputation: 14903

You can define named volumes in compose file & share it across multiple containers by adding those volume names in volume section of compose file for each container.

Ref - https://docs.docker.com/compose/compose-file/#volumes

Example (logs volume is shared across multiple containers )- 

version: '3.2'

services:

  lr:
    build:
      context: ./docker-build
      dockerfile: Dockerfile.lr
    restart: always
    volumes:
      - logs:/rest/logs/

  redis:
    image: redis:alpine
    volumes:
      - data:/data
      - logs:/rest/logs/

volumes:
  logs:
  data:

Alternatively, you can also you host bind/mount volumes as well but try not to use them(host-bind-volumes) as much as possible.

Upvotes: -1

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