Use mold for linking

.cargo/config.toml

@@ -0,0 +1,7 @@
+[target.x86_64-unknown-linux-gnu]
+linker = "clang"
+rustflags = ["-C", "link-arg=-fuse-ld=/usr/bin/mold"]
+
+[target.x86_64-unknown-linux-musl]
+linker = "clang"
+rustflags = ["-C", "link-arg=-fuse-ld=/usr/bin/mold"]

.woodpecker.yml

@@ -2,7 +2,7 @@ pipeline:
   build:
     image: rust:1-alpine
     commands:
-      - apk add clang build-base protoc
+      - apk add clang build-base protoc mold
       - cargo build --release
   containerize:
     image: docker:23-dind