[Rails & Docker & MySQL environment construction] Could not find gem ‘mysql2 (> = 0.4.4, <0.6.0)’ in any of the gem sources listed in your Gemfile.

Overview

This is the first post.

While watching this video while building the environment docker-compose buildrear docker-compose upAfter executing

Could not find gem ‘mysql2 (>= 0.4.4, < 0.6.0)’ in any of the gem sources listed in your Gemfile.


 I got the error.


# Development environment
macOS catalina
 Version 10.15.7


# What I tried
 For the time being, Gugu

 * Reinstall myslq
 + Update from ruby ​​2.5.8 to 2.6.6
 + Reconfigure docker desktop

 I tried various other things, but I tried various things, but the event did not change.
 4 hours have passed.
 The rising sun is about to cry.

# Solutions


```docker-compose run web bundle install```
```docker-compose up```
 It was solved by executing in the order of.

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