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A Docker image is a lightweight, stand-alone, executable package of a piece of software that includes everything needed to run it: code, runtime, system tools, system libraries, settings. Available for both Linux and Windows based apps, containerized software will always run the same, regardless of the environment. Containers isolate software from its surroundings, for example differences between development and staging environments and help reduce conflicts between teams running different software on the same infrastructure.
A container is a runtime instance of an image—what the image becomes in memory when actually executed. It runs completely isolated from the host environment by default, only accessing host files and ports if configured to do so. Container are stateless and should be considered read only! (you can go inside the container change data, but at container creation your changes are lost)
Both MYSQL (Data, users) and Wordpress (plugins, themes, uploads) are stateful, so we have to use Docker volume to persist data across container restart.
expose: 3306 will let you connect later with MySQLWorbench to the port from outside of the container. it is optional.
depends_on tell wordpress to wait till mysql db container is up
The always restart policy tells Docker to restart the container under every circumstance. What’s great about the always restart policy is that even if our Docker host was to crash on boot, the Docker service will restart our container.
We will be using the official Wordpress image from Docker HUB But first let's create a file uploads.ini to avoid issues later on while uploading plugins in wordpress.
The docker-compose up command aggregates the output of each container. It Builds, (re)creates, starts, and attaches to containers for a service. When the command exits, all containers are stopped. Running docker-compose up -d starts the containers in the background and leaves them running. To start Wordpress in the background
docker-compose up -d
To find the name of the container
docker ps -a
To read the logs file
docker logs wordpress
docker logs db
To go inside the container (remember all changes in there are lost at container restart)
Alexis Gauba presented a systematization of knowledge within major blockchain protocols or consensus, addresses the common challenges, economic model and solutions and provides a formal structure within which to compare them in this keynote presentation at Hyperledger Global Forum. …
I was attending the interesting LECTURE "Stablecoins: Crypto's Holy Grail or Fools’ Errand?" by Dr Garrick Hileman - Head of reseach at Blockchain - London School of Economics - United Kingdom at hashtagETH hashtagZurich and here is a copy of the slides Introducing: 2019 State of Stablecoins The 2019 report builds on its predecessor to provide an updated and expanded look at the current state of the stablecoin market - a space where we expect to see significant innovation in …
The report, entitled “The State of Stablecoins 2019: Hype vs. Reality in the Race for Stable, Global, Digital Money” is based on information collected from 40 crypto and stablecoin firms. The report’s lead author is George Samman, a blockchain and cryptocurrency advisor. According to the document, Samman “was commissioned to research the stablecoin landscape and then independently report his findings for the broader industry to learn from.” https://bit.ly/2TWc1ao …
The last 6 months of ICO have been imported and can be browse at https://ico.tokens-economy.com/statistics. I display there historical ICO data for all cryptocurrencies friendly countries for each month of the year. What you can get out of all these charts: You can see the number of ICO per months over 13 major countries (Cayman-Islands, UK, USA, Cyprus, Estonia, France, Germany, Liechtenstein, Malta, Russia, Singapore, Slovenia, Switzerland), Each country has its own color, how often that color appear on the map represents the …
Consensus algorithms enable network participants to agree on the contents of a blockchain in a distributed and trust-less manner. I’ve listed in the past few months all of them at tokens-economy.gitbook.io/consensus/ and thought it will be cool also to produce an Infographics The PNG (4528 x 2894 px, 2.5MB) can be downloaded here and the PDF version (280kb) with clickable consensus links here …
Usually, a percentage of the tokens is sold to ICO participants and a percentage kept for the company’s needs. The token distribution and allocation of the token is usually a chapter in the future company whitepaper. A pie chart displays how and to whom tokens will be allocated. But how much tokens are allocated (amount) and what are they used for? how much token should I spend for advisor? is 15% of all tokens too much for founder? How many …
introduction This is my attempt to list all possible blockchain consensus out there, I welcome pull request of the blockchain community! let's make it the main reference for blockchain consensus. Visit also Tokens-Economy.com to keep track of new developments in the distributed ledger technology space. Blockchain Consensus? At the core of the Blockchain disruption is a consensus algorithm: Consensus algorithms enable network participants to agree on the contents of a blockchain in a distributed and trust-less manner. “Consensus decision-making is a group …
Blockchain technology and cryptocurrencies have revolutionized the way companies raise capital but at the same time are bringing their own sets of challenges. To ensure that your startup will go through that (ad)venture in a safe manner, you should always adhere to best security practices, for your company AND your investors. This mind map will present you in a visual way lots of valuable information like: A compilation of the most dangerous threats to the ICO industry and how to mitigate, …
This new rendering will allow you to better compare countries The rendering being dynamic you can also pass some parameters like https://ico.tokens-economy.com/statistics/collage.html?width=800&height=800 The default size is width=450&height=450 Filter by year ico end. e.g all ico ended in 2017 https://ico.tokens-economy.com/statistics/collage.html?year=2017 Filter by category and year https://ico.tokens-economy.com/statistics/collage.html?category=Cryptocurrency And more ICO with no raised amount is also displayed now. ICO webpage has been added Text in bubble scale now properly and are always centered …
The innovation speed in Blockchain landscape is just breathtaking and being able to (or to be honest trying to...) follow all these rapid changes is a chance for all software engineers. At the core of the Blockchain disruption are consensus algorithm: Consensus algorithms enable network participants to agree on the contents of a blockchain in a distributed and trust-less manner. And the consensus algorithm plays a crucial role in maintaining the safety and efficiency of blockchain. Using the right algorithm may bring a significant increase to the …