Upgrade docker-compose

I got stuck with one of the docker-compose.yml that was using v3.8 and my docker-compose version was old. It did not support v3.8 files only v3.3 and below was supported.

RaspberryPi at the time of writing only had docker-compose version 1.21 in apt repo and officially 1.29.1 was out.

Below is the list of commands I ran to remove old docker-compose and install new from python3/pip3.

1.  Basic check
   

   user@hostname: $ pip3 --version
   pip 18.1 from /usr/lib/python3/dist-packages/pip (python 3.7)
   user@hostname: $ python3 -V
   Python 3.7.3

2. Remove already installed docker-compose
   

   $ sudo apt-get remove docker-compose
   
   # I had an older version
   user@hostname: $ pip3 list | grep docker-compose
   docker-compose 1.21.0
   
   $ pip3 uninstall docker-compose
   

3. Install docker-compose via pip3
   

   user@hostname: $ pip3 install docker-compose==1.29.1
   
   #It failed for me with compilation error. It was missing ffi.h (fatal error: ffi.h: No such file or directory)
   user@hostname: $ sudo apt-get install libffi-dev
   
   #ran install again, It was a success this time
   user@hostname: $ pip3 install docker-compose==1.29.1

4. Check python-compose install location
   

   # This is a really bad option. I did run this command for other alternatives, then I see that it does print the location of docker-compose :D
   user@hostname: $ pip3 uninstall docker-compose
   Uninstalling docker-compose-1.29.1:
   Would remove:
   /home /<user>/.local/bin/docker-compose
   

5. Where to resolve docker-compose from?
   

   user@hostname: $ docker-compose
   -bash: /usr/bin/docker-compose: No such file or directory
   
   user@hostname: $ sudo ln -s /home /<user>/.local/bin/docker-compose /usr/bin/docker-compose
   

I am all set now!

user@hostname: $ docker-compose -version
docker-compose version 1.29.1, build unknown

HTH