问题
My problem is that I have a docker-compose.yml file and an haproxy.cfg file and I want docker-compose to copy the haproxy.cfg file to the docker container. As per the post Docker composer copy files I can use volumes to do it but in my case I'm getting the below error. Can anybody help me achieve this.
Below is the code and everything
docker-compose.yml
version: "3.3"
services:
###After all services are up, we are initializing the gateway
gateway:
container_name: gateway-haproxy
image: haproxy
volumes:
- .:/usr/local/etc/haproxy
ports:
- 80:80
network_mode: "host"
Folder Structure
Command output
root@ubuntu:/home/karunesh/Desktop/Stuff/SelfStudy/DevOps/docker# docker-compose up
Creating gateway-haproxy ...
Creating gateway-haproxy ... done
Attaching to gateway-haproxy
gateway-haproxy | <7>haproxy-systemd-wrapper: executing /usr/local/sbin/haproxy -p /run/haproxy.pid -f /usr/local/etc/haproxy/haproxy.cfg -Ds
gateway-haproxy | [ALERT] 219/163305 (6) : [/usr/local/sbin/haproxy.main()] No enabled listener found (check for 'bind' directives) ! Exiting.
gateway-haproxy | <5>haproxy-systemd-wrapper: exit, haproxy RC=1
gateway-haproxy exited with code 1
回答1:
Try this:
volumes:
- ./haproxy.cfg:/usr/local/etc/haproxy/haproxy.cfg:ro
Instead of mounting the whole directory, this will only mount haproxy.cfg. The ro is an abbreviation for read-only, and its usage guarantees the container won't modify it after it gets mounted.
回答2:
In order to add additional files to the container, you have to build on top of the existing image from haproxy.
For example, your Dockerfile should look like this:
FROM haproxy:latest
COPY haproxy.cfg /usr/local/etc/haproxy/haproxy.cfg
Then you can update your docker compose file accordingly.
If you plan on using this for local development, just mount the file(s), see @MatTheWhale's answer
See more at the official haproxy Docker page
来源：https://stackoverflow.com/questions/45573831/docker-compose-not-able-to-copy-haproxy-cfg