Add lto = "true" to CI

.github/workflows/rust.yml

@@ -17,10 +17,10 @@ jobs:
         run: rustup default | grep nightly
       - name: Build
         run: |
-          cargo build --release
+          echo 'lto = "true"' >> Cargo.toml
+          env RUSTFLAGS="-C link-arg=-s" cargo build --release
           mkdir encrypted-dns
           mv target/release/encrypted-dns encrypted-dns/
-          strip encrypted-dns/encrypted-dns
           cp README.md encrypted-dns.toml encrypted-dns/
       - uses: actions/upload-artifact@master
         with:

README.md

@@ -44,6 +44,7 @@ Once rust is installed, the proxy can be compiled and installed as follows:
 
 ```sh
 cargo install encrypted-dns
+strip ~/.cargo/bin/encrypted-dns
 ```
 
 The executable file will be copied to `~/.cargo/bin/encrypted-dns` by default.