# Serverless Lambda: Where is Dockerfile for lambci/lambda:build-python3.6 image? **URL:** \ **Category:** Serverless Framework\ **Tags:** lambda\ **Created:** [June 7, 2018, 9:51pm UTC](https://forum.serverless.com/t/serverless-lambda-where-is-dockerfile-for-lambci-lambda-build-python3-6-image/4702 "2018-06-07T21:51:54Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![tnet](https://yyz2.discourse-cdn.com/flex036/user_avatar/forum.serverless.com/tnet/32/2678_2.png) [@tnet](https://forum.serverless.com/u/tnet)\ **Post date:** [June 7, 2018, 9:51pm UTC](https://forum.serverless.com/t/serverless-lambda-where-is-dockerfile-for-lambci-lambda-build-python3-6-image/4702/1 "2018-06-07T21:51:55Z")
Hello, I followed this tutorial: **[How to Handle your Python packaging in Lambda with Serverless plugins](https://serverless.com/blog/serverless-python-packaging/)** to set up a serverless lambda environment. Everything worked fine but now i’m trying to implement my own personal project. When I run **serverless deploy** , my output shown below: **Question:** In the line below, \> **Serverless: Docker Image: lambci/lambda:build-python3.6** , how do I access the Dockerfile for this docker image? I wanted to see what is going on, or do I just simply create my own Dockerfile? **Also** , when I go into this image via command: \> **docker run -it lambci/lambda:build-python3.6 /bin/bash** , I cannot find the package/code that docker is running before uploading it to the cloud in S3. Where would my files be located that docker is running and packaging/dependencies and executing? I checked **/var/task** , but it is empty. I even tried to run find command to find the files, nothing. > Serverless: Installing requirements of requirements.txt in .serverless… > **Serverless: Docker Image: lambci/lambda:build-python3.6** > Serverless: Packaging service… > Serverless: Excluding development dependencies… > Serverless: Injecting required Python packages to package… > Serverless: Uploading CloudFormation file to S3… > Serverless: Uploading artifacts… > Serverless: Uploading service .zip file to S3 (14.25 MB)… > Serverless: Validating template… > Serverless: Updating Stack… > Serverless: Checking Stack update progress… > … > Serverless: Stack update finished… ---
**Author:** ![r1b](https://avatars.discourse-cdn.com/v4/letter/r/cc9497/32.png) [@r1b](https://forum.serverless.com/u/r1b)\ **Post date:** [September 28, 2018, 7:07pm UTC](https://forum.serverless.com/t/serverless-lambda-where-is-dockerfile-for-lambci-lambda-build-python3-6-image/4702/2 "2018-09-28T19:07:34Z")
It’s here [https://github.com/lambci/docker-lambda/blob/master/python3.6/build/Dockerfile](https://github.com/lambci/docker-lambda/blob/master/python3.6/build/Dockerfile)