Docker Proxy Settings - Docker Development Tips & Tricks

In this video of "Docker Development Tips & Tricks", we will provide Proxy settings to both Docker Engine and Docker Client so they can connect to the internet when direct access is not allowed.

When we use Docker inside corporate networks or private clouds, it's typical having to connect to the internet via a Proxy server. This type of configuration with Docker was very confusing at first.

With this video, I hope to save you some time and explain in detail how Docker works with Proxy servers.

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🔴 Find code snippets mentioned in this video in the Gist below:

Chapters:
0:00 Introduction
0:39 My setup for this example
1:21 Proxy settings on Docker Desktop
1:54 Proxy settings for Docker on Linux
3:25 Verify proxy configuration for Docker engine
3:45 Set proxy variables for containers
4:50 Set default proxy settings for all new containers

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If you have any question or suggestions, I will do my best to answer every comment :)

[yarondantes]

thank you very much!!
very clear and very helpfull!

[CheeseRyba]

Thank you so much bro! After looking through the internet for the whole day this was the only thing that worked! :)

[garridus]

Thank you, was looking for this for a long time.

[theconfusedchannel]

Awesome video. Very efficient. no fluff.

[sandeep_r]

Great one!! Tried it for 3 days.. no luck Thanks for sharing the correct info especially in Docker Desktop🙂

[ravindragupta]

Great, was looking for this infi for a long time, thanks

[vjj]

Thank you very much for sharing the knowledge.

[raunakgupta]

Hi @ManuelCastellin, I am new to Google compute engine VM with docker, having a problem connecting some domains from inside containers. But able to connect those domains from the GCP CE VM instance. Any idea about this?? also can you let me know where can I find those HTTP_PROXY / HTTPS_PROXY IP /host addresses in Google compute engine VM? thx!

[sufisayyid]

Thanks alot... very well explained the steps.

[guddu]

Hi, Nice Video, How to set docker to work behind proxy server in azure kubernetes service using user id and password in configMap file

[samiullahsikandarkalhoro]

I am unable to get internet inside my container despite of adding config.json file 😢 i am able to pull images but inside containers i m not getting internet and also i use docker compose, is anything additional needed for docker compose?

[guddu]

just to add to previous comment, i want to apply setting for all the users, want to know where i have to apply this setting and what would be the command

[VanbietNguyen]

Hi Manuel. Just trying to understand this more. What are the benefits of setting up the proxy settings? Are you able to make curl or api calls? I know Docker has an API, but I'm having difficulties exposing ports safely. Is this a solution?

[JCBATTAGLINI]

Hi, how can i configure it using systemd please 🙏🏻

[santoshgoswami]

Hi Manuel for this detailed explanation,

I have done the proxy server settings and able to pull images but after running a container with exposed port 8181 I'm not able to access the application running inside the container

Seems like I'm not able to ping my host machine IP from inside the container

I would really appreciate if you can advise in this issue.

[biswajitbarman]

@Manuel ! Thank you so much for the excellent video and explanation. Do you have an to recommendation for what kind of proxy or what proxy software specifically can be used ? In our case we are in a DMZ and don't have an outbound internet connectivity and would like to use a proxy like how you suggested to hop over to the internet to the docker registry, but don't know what will work. Your help is appreciated.

[paulr]

Hi Manuel, sorry i am a noob but i think this will resolve my problem, however i am unsure what proxy values i am to use. please can you explain further. thanking you in advance.

[sebizs]

Nice explanation. But How can we set proxy in a windows container? I mean Windows server 2019 core is running in container.

[gauravmam]

Thanks a lot for the video Manuel. Great work! Could you please clarify a point, if we do the docker daemon proxy settings but not the containers proxy settings, I understand the container won't connect to the internet and will give timeout, but what about other containers in the same system? I have a microservices based setup in which multiple containers talk to each other using simple http requests. But right now they are getting started properly but aren't able to talk to each other. Can this be because of the fact, I haven't done the proxy settings at container level?

[anoircf]

3: I created the .docker directory but I can't modify the config.json file, it tells me (Error when writing .docker/config.json : No file or folder of this type)
Thank you very much for sharing the knowledge