Update import to new alpha version

Signed-off-by: Tom Chauveau <tom.chauveau@epitech.eu>

docs/reference/universe/README.md

@@ -11,7 +11,8 @@
 - [aws/s3](./aws/s3.md) - AWS Simple Storage Service
 - [dagger](./dagger/README.md) - Dagger core types
 - [dagger/op](./dagger/op.md) - op: low-level operations for Dagger processing pipelines
-- [docker](./docker.md) - Docker container operations
+- [docker](./docker/README.md) - Docker container operations
+- [docker/compose](./docker/compose.md) - -
 - [gcp](./gcp/README.md) - Google Cloud Platform
 - [gcp/gcr](./gcp/gcr.md) - Google Container Registry
 - [gcp/gke](./gcp/gke.md) - Google Kubernetes Engine

docs/reference/universe/docker/README.md

@@ -2,12 +2,12 @@
 sidebar_label: docker
 ---
 
-# dagger.io/docker
+# alpha.dagger.io/docker
 
 Docker container operations
 
 ```cue
-import "dagger.io/docker"
+import "alpha.dagger.io/docker"
 ```
 
 ## docker.#Build

docs/reference/universe/docker/compose.md

@@ -2,10 +2,10 @@
 sidebar_label: compose
 ---
 
-# dagger.io/docker/compose
+# alpha.dagger.io/docker/compose
 
 ```cue
-import "dagger.io/docker/compose"
+import "alpha.dagger.io/docker/compose"
 ```
 
 ## compose.#Client