take contaienr from pool

src/container_pool.rs

@@ -0,0 +1,34 @@
+use std::sync::Arc;
+
+use tokio::sync::Mutex;
+
+use crate::{docker::Container, language::Language};
+
+pub struct ContainerPool {
+    pub containers: Arc<Mutex<Vec<Container>>>,
+}
+
+impl ContainerPool {
+    pub fn new() -> Self {
+        Self {
+            containers: Arc::new(Mutex::new(vec![])),
+        }
+    }
+
+    pub async fn get_container(&mut self, language: Language) -> Container {
+        let mut pool = self.containers.lock().await;
+        if let Some(i) = pool.iter().position(|container| {
+            if let Some(l) = &container.language {
+                l.image == language.image
+            } else {
+                false
+            }
+        }) {
+            let container = pool[i].clone();
+            pool.remove(i);
+            container
+        } else {
+            Container::from_language(language).await
+        }
+    }
+}

src/docker.rs

@@ -34,6 +34,7 @@ pub async fn docker_ps() -> Vec<ContainerSummary> {
     list.unwrap()
 }
 
+#[derive(Clone, Debug)]
 pub struct Container {
     pub id: String,
     pub name: String,

src/language.rs

@@ -1,7 +1,7 @@
 use bollard::{container::Config, service::HostConfig};
 use serde::{Deserialize, Serialize};
 
-#[derive(Serialize, Deserialize, Clone, Debug)]
+#[derive(Serialize, Deserialize, Clone, Debug, PartialEq, Eq)]
 pub struct Language {
     pub name: String,
     pub code: Vec<String>,