refactor: removed "module docker" statements

containers.v

@@ -1,5 +1,3 @@
-module docker
-
 import json
 import net.urllib
 import time

docker.v

@@ -1,5 +1,3 @@
-module docker
-
 import net.unix
 import io
 import net.http
@@ -23,7 +21,7 @@ mut:
 
 // new_conn creates a new connection to the Docker daemon.
 pub fn new_conn() ?&DockerConn {
-	s := unix.connect_stream(docker.socket)?
+	s := unix.connect_stream(socket)?
 
 	d := &DockerConn{
 		socket: s
@@ -73,7 +71,7 @@ pub fn (mut d DockerConn) send_request_with_json<T>(method http.Method, url urll
 pub fn (mut d DockerConn) read_response_head() ?http.Response {
 	mut res := []u8{}
 
-	util.read_until_separator(mut d.reader, mut res, docker.http_separator)?
+	util.read_until_separator(mut d.reader, mut res, http_separator)?
 
 	return http.parse_response(res.bytestr())
 }
@@ -85,9 +83,9 @@ pub fn (mut d DockerConn) read_response_body(length int) ?string {
 		return ''
 	}
 
-	mut buf := []u8{len: docker.buf_len}
+	mut buf := []u8{len: buf_len}
 	mut c := 0
-	mut builder := strings.new_builder(docker.buf_len)
+	mut builder := strings.new_builder(buf_len)
 
 	for builder.len < length {
 		c = d.reader.read(mut buf) or { break }

images.v

@@ -1,5 +1,3 @@
-module docker
-
 import net.http { Method }
 import net.urllib
 import json

stream.v

@@ -1,5 +1,3 @@
-module docker
-
 import io
 import util
 import encoding.binary