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-rw-r--r--README.md6
1 files changed, 5 insertions, 1 deletions
diff --git a/README.md b/README.md
index db4120da..8be021c9 100644
--- a/README.md
+++ b/README.md
@@ -68,8 +68,12 @@ $ docker-compose build
$ sudo pacman -S shards crystal imagemagick librsvg postgresql
# Ubuntu or Debian
+# First you have to add the repository to your APT configuration. For easy setup just run in your command line:
$ curl -sSL https://dist.crystal-lang.org/apt/setup.sh | sudo bash
-$ sudo apt update
+# That will add the signing key and the repository configuration. If you prefer to do it manually, execute the following commands:
+$ curl -sL "https://keybase.io/crystal/pgp_keys.asc" | sudo apt-key add -
+$ echo "deb https://dist.crystal-lang.org/apt crystal main" | sudo tee /etc/apt/sources.list.d/crystal.list
+$ sudo apt-get update
$ sudo apt install crystal libssl-dev libxml2-dev libyaml-dev libgmp-dev libreadline-dev librsvg2-dev postgresql imagemagick libsqlite3-dev
```