kuznero

Installing docker on CentOS 7

Download and install docker-engine

sudo yum install ...

Configure it to run in docker group

kuznero

KDE version

Faience and Faenza icons for Ubuntu/Linux Mint/other Ubuntu derivatives

• Download from launchpad and then use Unity Tweak Tool
• ... or follow noobslab

LinuxMint oxygen mouse cursor

kuznero

[1.] Install ksshaskpass

$ sudo yum install ksshaskpass

[2.] Create auto starting [askpass.sh] script at [~/.kde/Autostart]

#!/bin/sh
export SSH_ASKPASS=/usr/bin/ksshaskpass
ssh-add < /dev/null

kuznero

Single User mode routine in Microsoft SQL Server

USE master;
GO
ALTER DATABASE <DatabaseName>
SET SINGLE_USER WITH ROLLBACK IMMEDIATE;
BEGIN TRY
  ALTER DATABASE <DatabaseName>
 SET ALLOW_SNAPSHOT_ISOLATION ON;

kuznero

Proxy configuration for aptitude

sudo apt-key adv
  --keyserver-options http-proxy=http://127.0.0.1:3128
  --keyserver hkp://something.com:80
  --recv-keys 3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF

In case if CNTLM is unable to help, try to fallback to direct proxy url with credentials.

kuznero

Work with Docker behind proxy

Docker on Linux OS

Following instructions are from official docuementation:

sudo mkdir /etc/systemd/system/docker.service.d

kuznero

Cleanup docker images and containers after failed builds

Sometimes, there are some untagged images left behind after failed builds. In order to get rid of those, this script can be used.

#!/bin/bash
docker rm $(docker ps -aq)
docker rmi $(docker images | grep "^<none>" | awk '{print $3}')

kuznero

Synchronizing Git Submodules Modifying URLs

Sometimes it is not possible to access submodules as they were registered. Solution is here:

#!/bin/bash

NUMARGS=$#
SCRIPT=`basename ${BASH_SOURCE[0]}`
GREEN='\033[1;32m'

kuznero

How to build .Net projects with Docker

Certain folder structure is assumed

FAKE build script (build.fsx)

// include Fake libs
#r "./packages/FAKE/tools/FakeLib.dll"

kuznero

Console application that exit on Ctrl-C (ready for Docker)

Console.ReadLine or Console.ReadKey do not work as expected under Docker container environment. Thus, typical way to solve this would be to properly handle Ctrl-C key combination.

C# snippet

using System;
using System.Threading;