daemon

You may meet such error:

ERROR: Service 'web' failed to build: Get https://registry-1.docker.io/v2/library/python/manifests/2.7: net/http: TLS handshake timeout

xxxxxxxxxx set(CMAKE_BUILD_TYPE Debug)rosrun –prefix ‘gdb -ex run –args’ [package_name] [node_name]sh

{
  “registry-mirrors”:[“https://docker.mirrors.ustc.edu.cn”]
}

commands

systemctl daemon-reload
systemctl restart docker
remove all images and containers

docker rm $(docker ps -a -q)
docker rmi $(docker images -q)

Docker Proxy

Sometimes we need to download the developing packages from the external Network when do the research. However, I found I cannot let docker access the proxy depoloyed on my host machine especially in the build stage, such as “docker-compose build”.

Usually the proxy on the host can be used when the container is up (docker-compose up).

Successful Configuration for “docker-compose build”

Check the IP address on your host. Use the IP like “192.168.1.7”, rather than “127.0.0.1”. Because “127.*” is inside the docker container. A temperary docker container is used when you build the docker image.
Let the proxy server listen the IP and port, “192.168.1.7” that you set in the previous step. By default, the proxy server only can listen “127.0.0.1”. Note: this is the reason why I failed in the past.

docker-compose example

version: '2.3'
services:
  proxy:
    image: yubaoliu/proxy
    build:
        context: .
        dockerfile: Dockerfile
        args:
            http_proxy: $http_proxy
            https_proxy: $https_proxy
    runtime: nvidia
    stdin_open: true
    tty: true
    privileged: true
    command: xterm
    network_mode: host
    environment:
        - DISPLAY
        - QT_X11_NO_MITSHM=1
        - http_proxy=$http_proxy
        - https_proxy=$https_proxy
    dns:
        - 8.8.8.8
        - 8.8.4.4
    volumes:
        - /tmp/.X11-unix:/tmp/.X11-unix:rw
        - ~/.Xauthority:/root/.Xauthority

env example

http_proxy=http://192.168.1.7:41091
https_proxy=http://192.168.1.7:41091

Dockerfile example

FROM golang:1.12

RUN curl www.google.com --max-time 3

How to test proxy

curl www.google.com --max-time 3

How to restart docker

sudo systemctl daemon-reload
sudo systemctl restart docker

Global config

This is a global config. Not suggested to use.

vim ~/.docker/config.json

{
 "proxies":
 {
   "default":
   {
     "httpProxy": "http://192.168.1.7:41091",
     "httpsProxy": "http://192.168.1.7:41091",
     "noProxy": ""
   }
 }
}

Set Proxy inside the Dockerfile

Not suggested to use.

FROM golang:1.12

ENV http_proxy "http://192.168.1.7:1087"
#ENV HTTP_PROXY "http://127.0.0.1:1087"
ENV https_proxy "http://192.168.1.7:1087"
#ENV HTTPS_PROXY "http://127.0.0.1:1087"

RUN curl www.google.com --max-time 3

Use build-arg

docker build -t anguiao/nginx-brotli . --build-arg http_proxy=http://172.21.0.9:8118 --build-arg https_proxy=http://172.21.0.9:8118

注意：在写代理地址时，不可写成 127.0.0.1 或者 localhost，应使用宿主机的 IP。我这里使用的是宿主机的内网 IP，可根据网络环境进行适当的改动。

docker.service.d

mkdir /etc/systemd/system/docker.service.d

[Service]
 # NO_PROXY is optional and can be removed if not needed
 # Change proxy_url to your proxy IP or FQDN and proxy_port to your proxy port
 # For Proxy server which require username and password authentication, just add the proper username and password to the URL. (see example below)

 # Example without authentication
 Environment="HTTP_PROXY=http://proxy_url:proxy_port" "NO_PROXY=localhost,127.0.0.0/8"

 # Example with authentication
 Environment="HTTP_PROXY=http://username:password@proxy_url:proxy_port" "NO_PROXY=localhost,127.0.0.0/8"

Docker Proxy Setting