fix: tag Labrinth and Daedalus Docker builds with the right metadata (#4147)

* fix: tag Labrinth and Daedalus Docker builds with the right metadata

* chore: make it clear that Labrinth license is AGPL-3.0-only

apps/labrinth/build.rs

@@ -1,40 +1,23 @@
 use std::path::Path;
-use std::process::Command;
 
 use chrono::Local;
 use dotenv_build::Config;
 
 fn main() {
-    let output = Command::new("git")
-        .arg("rev-parse")
-        .arg("HEAD")
-        .output()
-        .expect("`git` invocation to succeed");
+    println!("cargo:rerun-if-changed=migrations");
 
-    let git_hash = String::from_utf8(output.stdout)
-        .expect("valid UTF-8 output from `git` invocation");
-
-    println!("cargo::rerun-if-changed=../../.git/HEAD");
-    println!("cargo::rustc-env=GIT_HASH={}", git_hash.trim());
-
-    let timedate_fmt = Local::now().format("%F @ %I:%M %p");
-    let timezone_fmt = iana_time_zone::get_timezone()
-        .map(|tz| format!(" ({tz})"))
-        .unwrap_or_default();
-
-    let comptime = timedate_fmt.to_string() + timezone_fmt.as_str();
-
-    println!("cargo::rustc-env=COMPILATION_DATE={comptime}");
-
-    // trick to get compilation profile
-    let profile = std::env::var("OUT_DIR")
-        .expect("OUT_DIR to be set")
-        .split(std::path::MAIN_SEPARATOR)
-        .nth_back(3)
-        .unwrap_or("unknown")
-        .to_string();
-
-    println!("cargo::rustc-env=COMPILATION_PROFILE={profile}");
+    println!(
+        "cargo::rustc-env=COMPILATION_DATE={}",
+        format_args!(
+            "{date} ({tz})",
+            date = Local::now().format("%F @ %I:%M %p"),
+            tz = iana_time_zone::get_timezone().unwrap_or_default()
+        )
+    );
+    println!(
+        "cargo::rustc-env=COMPILATION_PROFILE={}",
+        std::env::var("PROFILE").as_deref().unwrap_or("unknown")
+    );
 
     dotenv_build::output(Config {
         filename: Path::new(".build.env"),
@@ -42,6 +25,4 @@ fn main() {
         fail_if_missing_dotenv: false,
     })
     .unwrap();
-
-    println!("cargo:rerun-if-changed=migrations");
 }