Just for code review

.gitignore

@@ -1,2 +1,3 @@
 /target
-/.vscode
+/.vscode
+/testing_staff

Cargo.toml

@@ -1,11 +1,11 @@
 [package]
-name = "casino_contest"
+name = "easy_contest"
 version = "0.1.0"
 edition = "2024"
 
 [features]
 root=[]
 
 [dependencies]
-nix = "0.29.0"
-libc = "0.2.172"
+nix = "0.30.1"
+shellexpand = "3.0"

README.md

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+[растпобеда.рф](https://растпобеда.рф)
+
+# **EasyContest**
+EasyContest - one day this will be a selfmade programming contest platform focused on ease of use and extendability, but now it's just beginning)
+
+## Container module  
+Incapsulates running compiled executables in separate "container jail" with limited resources and permissions. Right on only statically linked binaries supported.  
+
+In `container.conf` you set your own settings to run executable
+

container.conf

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+RAM_LIMIT=# memory limit in B, MB, KB, GB
+CPU_LIMIT=# cpu limit in percents (optional, 100% by default)
+TIME_LIMIT=# time limit in seconds (optional, no limit by default)
+JAIL_DIR=# directory to store container jails
+EXE_PATH=# path to the compiled, statically linked executable
+STDIN_PATH=# path to redirected stdin file (optional)
+STDOUT_PATH=# path to redirected stdout file (optional)
+STDERR_PATH=# path to redirected stderr file (optional)

src/common.rs

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+use std::io::{BufRead, BufReader};
+
+#[macro_export]
+macro_rules! mem_size {
+    ($value:expr, B) => {
+        $value
+    };
+
+    ($value:expr, KB) => {
+        $value * 1024
+    };
+
+    ($value:expr, MB) => {
+        $value * 1024 * 1024
+    };
+
+    ($value:expr, GB) => {
+        $value * 1024 * 1024 * 1024
+    };
+}
+
+pub fn get_from_config(variable: &str) -> Option<String> {
+    let conf_file = std::fs::OpenOptions::new()
+                                                .read(true)
+                                                .open("./container.conf")
+                                                .expect("Opening .conf file");
+
+    let conf_file = BufReader::new(conf_file);
+    for line in conf_file.lines() {
+        let line = line.expect("Reading line from .conf");
+
+        if let Some((key, val)) = line.split_once('=') {
+            if key == variable && !val.trim().starts_with('#') {
+                return Some(val.trim().to_string());
+            }
+        }
+    }
+
+    None
+}