Saturday, 23 January 2021

dpkg: package is in a very inconsistent state

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Somehow the docker-ce package on my Ubuntu16.04 machine got out of shape.  I could not update it, I could not delete it.  Running this and o...
Wednesday, 9 October 2019

Running containerized traffic lights in Raspberry Pi Kubernetes cluster

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My cluster setup The incentive behind this exercise was to understand how to set up deployment of an application talking to Raspbe...
Monday, 6 August 2018

Docker issue with "no such file or directory"

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Problem Trying run a docker container fails with mysterious error: container_linux.go:247: starting container process caused "exe...
Wednesday, 1 August 2018

Eclectic collection of helpful Docker and Kubernetes commands

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Docker docker build -f gcd-service/Dockerfile -t quay.io/tamarakaufler/gcd-service:$(GCD_IMAGE_TAG) . docker login quay.io -u tamaraka...
Tuesday, 29 May 2018

Bootstrapping a database for use with containerized applications (PostgreSQL, MongoDB etc)

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PROBLEM Developing a dockerized microservice that requires access to a dockerized database with a more complex custom setup (a new user ...
Saturday, 12 May 2018

Dockerization of Go web applications using alpine base image on Ubuntu 16.04

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Using the attractively small alpine image as a base for dockerizing a Go web application on an Ubuntu host, does not work if the applicati...
Sunday, 13 August 2017

Setting up Brother printers HL-4570CDW (works for DCP-J315W too) on Ubuntu 17.04

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Download drivers from http://support.brother.com/g/b/downloadlist.aspx?c=us&lang=en&prod= hl4570cdw _all&os=128 Either down...
Wednesday, 10 May 2017

Dockerization of a Golang application

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There are several possibilities how to write a Dockerfile for a Golang application. Which one to choose depends on dependencies the applica...
Saturday, 6 May 2017

Dockerization of an sftp service

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Synopsis As part of building a web service, I wanted to have some of the microservice dependencies dockerized for easy setup and deployme...
Thursday, 4 May 2017

Xsane - Falied to open device error

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PROBLEM Unable to open xsane due to an error: Failed to open device 'brother3:bus4:dev2' Invalid argument BACKGROUND Ubun...
Thursday, 27 April 2017

Problem with github not labelling the repo language correctly

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GitHub uses the Linguist library to classify a repo. It does so by comparing percentages of the various language files (goes by extensions ...

Cannot sign into my blogger - admin console obstacle

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So I wanted to add a new post to my Google blog (this one) after a longish break. It turned out I could not. At least, not easily. I was do...
Saturday, 7 May 2016

Why the order of the Docker commands in the Dockerfile matters

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The Docker image is built from directives in the Dockerfile. Docker images are actually built in layers and each layer is part of the image...
Wednesday, 4 May 2016

Dockerizing a nodejs application requiring AWS authentication

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Background To dockerize an application/run an application in a Docker container, refers to running the application in a light, portable...