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How to add a collapsible section in markdown

1. Example

Click me

Heading

1. Foo
2. Bar
   • Baz

• Qux

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From Stack Overflow.

# Fetch the submodule commits into the main repository
git remote add submodule_origin git://url/to/submodule/origin
git fetch submodule_origin

# Start a fake merge (won't change any files, won't commit anything)
git merge -s ours --no-commit submodule_origin/master

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Git Submodules basic explanation

Why submodules?

In Git you can add a submodule to a repository. This is basically a repository embedded in your main repository. This can be very useful. A couple of usecases of submodules:

• Separate big codebases into multiple repositories.

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Install Instructions

Install Hardhat

npm install --save-dev hardhat

Initiate a new Hardhat project (in empty directory)

npx hardhat

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const calculate = (n, k) => {
  const exponent = (-k * (k - 1)) / (2 * n)
  return 1 - Math.E ** exponent
}

// where `n` is the number of possible unique hashes
// where `k` is the number of values created

// calculate(100000, 25) => 0.0029955044966269995 aka 0.29% chance of collision

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func ComputeHmac256(message string, secret string) string {
	key := []byte(secret)
	h := hmac.New(sha256.New, key)
	h.Write([]byte(message))
	return base64.StdEncoding.EncodeToString(h.Sum(nil))
}

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// Grammar for parsing of the Fabric Endorsment Policies
//
// Defined in the documentation at 
// https://hyperledger-fabric.readthedocs.io/en/latest/endorsement-policies.html#endorsement-policy-syntax

// The expression will be an operator with arguments, each of the arguments can be an expression
// The OutOf operator is a bit different as that demands the first agument be a number
Expression 
   =  op:Operator '(' _ args:Some_Expression_Args _ ')' 
      {

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#!/usr/bin/env sh
HOST_PATH=$(pwd)
GUEST_PATH=/usr/app
HOST_EXPORT="${HOST_PATH} -network 192.168.99.0 -mask 255.255.255.0 -alldirs -maproot=root:wheel"

if ! grep -q "$HOST_EXPORT" /etc/exports; then
    echo $HOST_EXPORT | sudo tee -a /etc/exports
    sudo nfsd restart
fi

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Ramp up your Kubernetes development, CI-tooling or testing workflow by running multiple Kubernetes clusters on Ubuntu Linux with KVM and minikube.

In this tutorial we will combine the popular minikube tool with Linux's Kernel-based Virtual Machine (KVM) support. It is a great way to re-purpose an old machine that you found on eBay or have gathering gust under your desk. An Intel NUC would also make a great host for this tutorial if you want to buy some new hardware. Another popular angle is to use a bare metal host in the cloud and I've provided some details on that below.

We'll set up all the tooling so that you can build one or many single-node Kubernetes clusters and then deploy applications to them such as OpenFaaS using familiar tooling like helm. I'll then show you how to access the Kubernetes clusters from a remote machine such as your laptop.

Pre-reqs

• This tutorial uses Ubuntu 16.04 as a base installation, but other distributions are supported by KVM. You'll need to find out how to install

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apiVersion: v1
kind: ReplicationController
metadata:
  name: kube-registry-v0
  namespace: kube-system
  labels:
    k8s-app: kube-registry
    version: v0
spec:
  replicas: 1