Create blog post template for Gatsby.js

create_post.sh

#!/usr/bin/env sh

set -eu

## How to use
# ./create_post.sh *title*

## Output
# content/posts/2020-01-26--*title*/
#   ./index.md

DATETIME=`date +%Y-%m-%d--`
TARGET_DIR=content/posts/$DATETIME$1

mkdir $TARGET_DIR

cat <<EOF > $TARGET_DIR/index.md
---
title: $1
category: "announcement"
cover: //*TODO*
author: *me*
---
EOF