Docker: Use more aggressive inlining for higher efficiency (#5242)

Syncs https://github.com/XTLS/Xray-core/pull/5026

.github/docker/Dockerfile

@@ -6,7 +6,7 @@ WORKDIR /src
 COPY . .
 ARG TARGETOS
 ARG TARGETARCH
-RUN GOOS=$TARGETOS GOARCH=$TARGETARCH CGO_ENABLED=0 go build -o xray -trimpath -ldflags "-s -w -buildid=" ./main
+RUN GOOS=$TARGETOS GOARCH=$TARGETARCH CGO_ENABLED=0 go build -o xray -trimpath -buildvcs=false -gcflags="all=-l=4" -ldflags "-s -w -buildid=" ./main
 
 # Download geodat into a staging directory
 ADD https://raw.githubusercontent.com/Loyalsoldier/v2ray-rules-dat/release/geoip.dat /tmp/geodat/geoip.dat

.github/docker/Dockerfile.usa

@@ -6,7 +6,7 @@ WORKDIR /src
 COPY . .
 ARG TARGETOS
 ARG TARGETARCH
-RUN GOOS=$TARGETOS GOARCH=$TARGETARCH CGO_ENABLED=0 go build -o xray -trimpath -ldflags "-s -w -buildid=" ./main
+RUN GOOS=$TARGETOS GOARCH=$TARGETARCH CGO_ENABLED=0 go build -o xray -trimpath -buildvcs=false -gcflags="all=-l=4" -ldflags "-s -w -buildid=" ./main
 
 # Download geodat into a staging directory
 ADD https://raw.githubusercontent.com/Loyalsoldier/v2ray-rules-dat/release/geoip.dat /tmp/geodat/geoip.dat