feat: add image_inspect function

docker.v

@@ -115,14 +115,14 @@ fn (mut d DockerConn) read_response_body(length int) !string {
 fn (mut d DockerConn) read_response() !(http.Response, string) {
 	head := d.read_response_head()!
 
-    if head.status().is_error() {
-        content_length := head.header.get(.content_length)!.int()
-        body := d.read_response_body(content_length)!
+	if head.status().is_error() {
+		content_length := head.header.get(.content_length)!.int()
+		body := d.read_response_body(content_length)!
 		mut err := json.decode(DockerError, body)!
-        err.status = head.status_code
+		err.status = head.status_code
 
-        return err
-    }
+		return err
+	}
 
 	// 204 means "No Content", so we can assume nothing follows after this
 	if head.status() == .no_content {

images.v

@@ -1,11 +1,16 @@
 module docker
 
 import net.http { Method }
+import types { Image }
 import json
 
-struct Image {
-pub:
-	id string [json: Id]
+pub fn (mut d DockerConn) image_inspect(image string) !Image {
+	d.send_request(.get, '/images/$image/json')!
+	_, body := d.read_response()!
+
+	data := json.decode(Image, body)!
+
+	return data
 }
 
 // pull_image pulls the given image:tag.
@@ -17,7 +22,7 @@ pub fn (mut d DockerConn) pull_image(image string, tag string) ! {
 		content_length := head.header.get(.content_length)!.int()
 		body := d.read_response_body(content_length)!
 		mut err := json.decode(DockerError, body)!
-        err.status = head.status_code
+		err.status = head.status_code
 
 		return err
 	}

types/image.v

@@ -0,0 +1,6 @@
+module types
+
+pub struct Image {
+pub:
+	id string [json: Id]
+}