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7 changes: 7 additions & 0 deletions engine/install/ubuntu.md
Original file line number Diff line number Diff line change
Expand Up @@ -98,9 +98,16 @@ from the repository.

2. Add Docker's official GPG key:

For Ubuntu 20.04 and newer:
```bash
$ curl -fsSL {{ download-url-base }}/gpg | sudo cat > /etc/apt/trusted.gpg.d/docker.asc
```

For older versions of Ubuntu:
```bash
$ curl -fsSL {{ download-url-base }}/gpg | sudo apt-key add -
```


Verify that you now have the key with the fingerprint
<span><code>9DC8 5822 9FC7 DD38 854A&nbsp;&nbsp;E2D8 8D81 803C 0EBF CD88</code></span>, by searching for the
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