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In redhat, if you need build container from base image, for example, registry.access.redhat.com/rhel7/rhel:7.3-53 (free download from https://access.redhat.com/containers) You have to build this image on a red hat server with subscription managed registered.

Here is the way to bypass the check and you can build docker image on any redhat 7 server.

make sure the package has been installed

yum install rh-amazon-rhui-client

list the package files

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Screen Quick Reference

Basic

Description	Command
Start a new session with session name	screen -S <session_name>
List running sessions / screens	screen -ls
Attach to a running session	screen -x
Attach to a running session with name	screen -r

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FROM php:7.4-fpm-alpine
# @see https://hub.docker.com/r/jpswade/php7.4-fpm-alpine
MAINTAINER Agent Software <dev@agentsoftware.net>

# Install gd, iconv, mbstring, mysql, soap, sockets, zip, and zlib extensions
# see example at https://hub.docker.com/_/php/
RUN apk add --update \
		$PHPIZE_DEPS \
		freetype-dev \
		git \

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Backup android app, data included, no root needed, with adb

adb is the Android CLI tool with which you can interact with your android device, from your PC

You must enable developer mode (tap 7 times on the build version in parameters) and install adb on your PC.

Fetch application APK

To get the list of your installed applications:

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###################################
# general ignore patterns
###################################

build/
obj/
*.o
Debug*/
Release*/
*.mode*

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云

IaaS指提供系统（可以自己选）或者储存空间之类的硬件，软件要自己手动装；PaaS提供语言环境和框架（可以自己选）；SaaS只能使用开发好的软件（卖软件本身）；BaaS一般类似于非关系数据库，但各家不通用，有时还有一些其它东西。

其他人的集合

• https://education.github.com/pack GitHub学生包，需用教育邮箱验证。各种福利，可从DigitalOcean上手
• https://github.com/ripienaar/free-for-dev
• https://github.com/AchoArnold/discount-for-student-dev
• https://github.com/qinghuaiorg/free-for-dev-zh 很久没更新了

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Mistakes to Avoid: Docker Antipatterns

Whichever route you take to implementing containers, you’ll want to steer clear of common pitfalls that can undermine the efficiency of your Docker stack.

Don’t run too many processes inside a single container

The beauty of containers—and an advantage of containers over virtual machines—is that it is easy to make multiple containers interact with one another in order to compose a complete application. There is no need to run a full application inside a single container. Instead, break your application down as much as possible into discrete services, and distribute services across multiple containers. This maximizes flexibility and reliability.

Don’t install operating systems inside Docker containers

It is possible to install a complete Linux operating system inside a container. In most cases, however, this is not necessary. If your goal is to host just a single application or part of an application in the container, you need to install only the essential

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#!/bin/sh

cat -| awk '
{
  gsub(/&lt;/, "<")
  gsub(/&gt;/, ">")
  gsub(/&amp;/, "&")
  gsub(/&quot;/, "\"")
  gsub(/\{/, "{\n")
  gsub(/\}/, "\n}")

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    logging:
      driver: "json-file"
      options:
          max-file: "20"
          max-size: "100m"

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Uploading Files from Google Compute Engine (GCE) VMs to Google Cloud Storage (GCS)

I had a bit of trouble trying to configure permissions to upload files from my Google Compute Engine instance to my Google Cloud Storage bucket. The process isn't as intuitive as you think. There are a few permissions issues that need to be configured before this can happen. Here are the steps I took to get things working.

Let's say you want to upload yourfile.txt to a GCS bucket from your virtual machine. You can use the gsutil command line tool that comes installed on all GCE instances.

If you've never used the gcloud or gsutil command line tools on this machine before, you will need to initialize them with a service account.