While trying to build a docker image from a very raw apache spark base image, since it didn’t have any basic packages such as vim, ssh, wget, etc, I entered a running container of this image and typed
apt update but the following error msg was returned
Could not handshake: An unexpected TLS packet was received
This error message did not go away even though I set the
https_proxy environment variable.
BTW, I was trying to build this docker image on a server which was behind a corporate proxy. Also when creating the container, I allowed host network access so that it can access “localhost:7007” which is a port that points to the corporate proxy.
The solution that worked for me was from this stackoverflow answer.
I manually created a file
/etc/apt/apt.conf.d/05proxy and added the following lines
Acquire::http::proxy "http://localhost:7007"; Acquire::https::proxy "http://localhost:7007";
where “localhost:7007” is where I have opened a port to be directed to my corporate proxy. Note that even for
https proxy, I have forced it to point to
http of proxy.
After adding this file and running
apt update works.