Docs: guides/1225-pushing-plan-dependencies

Add documentation enforcing the best practice regarding dagger dependencies `cue.mod/pkg`

Signed-off-by: guillaume <guillaume.derouville@gmail.com>

docs/guides/1225-pushing-plan-dependencies.md

@@ -0,0 +1,67 @@
+---
+slug: /1225/pushing-plan-dependencies/
+---
+
+# Pushing your plan's dependencies
+
+After completing your plan and setting up your GHA or Gitlab CI, you'll realize that a lot of `Cue` files are present in the `cue.mod/pkg` directory. These are the dependencies required by Dagger to run your actions :
+
+```shell
+cue.mod/
+├── pkg
+│   ├── dagger.io
+│   │   ├── cue.mod
+│   │   └── dagger
+│   │       └── core
+│   └── universe.dagger.io
+│       ├── alpine
+│       │   └── test
+│       ├── aws
+│       │   ├── cli
+│       │   │   └── test
+│       │   └── test
+│       ├── bash
+│       │   └── test
+│       │       └── data
+│       ├── cue.mod
+│       ├── docker
+│       │   ├── cli
+│       │   │   └── test
+│       │   └── test
+│       ├── examples
+│       │   ├── changelog.com
+│       │   │   ├── elixir
+│       │   │   │   └── mix
+│       │   │   └── gerhard
+│       │   ├── helloworld
+│       │   └── todoapp
+│       │       ├── public
+│       │       └── src
+│       │           └── components
+│       ├── git
+│       ├── go
+│       │   └── test
+│       ├── netlify
+│       │   └── test
+│       │       └── testutils
+│       ├── nginx
+│       ├── powershell
+│       │   └── test
+│       │       └── data
+│       ├── python
+│       ├── x
+│       │   └── david@rawkode.dev
+│       │       └── pulumi
+│       └── yarn
+│           └── test
+│               └── data
+│                   ├── bar
+│                   └── foo
+└── usr
+```
+
+The current best practice is to push your project with these files: it will ensure its consistency between runs.
+
+:::info
+We are aware of that and, soon, `dagger project update` will only download the dependencies required by your actions
+:::