Slim the go binary

Dockerfile

@@ -20,7 +20,7 @@ COPY go.* /app/
 COPY templates /app/templates/
 COPY static /app/static/
 RUN cd /app && \
-    go build -a -o server
+    go build -ldflags="-s -w" -a -o server
 
 FROM ubuntu:23.04
 COPY --from=builder /etc/passwd /etc/passwd

README.md

@@ -5,6 +5,9 @@
 ## Run server
 ```sh
 go build -o server && ./server
+
+# If you are really conscious about the size. You can run this instead:
+go build -ldflags="-s -w" -a -o server && ./server
 ```
 
 ---

generate-binaries.sh

@@ -6,16 +6,15 @@ set -x -eou pipefail
 echo "Proceeding with generating the binaries..."
 
 platforms=("linux/arm64" "linux/amd64" "darwin/amd64")
-VERSION=`grep -E "MAJOR|MINOR|PATCH" version.go | cut -d '"' -f 2 | xargs echo -n | tr -s " " "."`
+VERSION=$(grep -E "MAJOR|MINOR|PATCH" version.go | cut -d '"' -f 2 | xargs echo -n | tr -s " " ".")
 
-for platform in "${platforms[@]}"
-do
+for platform in "${platforms[@]}"; do
     platform_split=(${platform//\// })
     GOOS=${platform_split[0]}
     GOARCH=${platform_split[1]}
     output_name=hello-universe'-v'$VERSION'-'$GOOS'-'$GOARCH
 
-    env GOOS=$GOOS GOARCH=$GOARCH go build -o $output_name .
+    env GOOS=$GOOS GOARCH=$GOARCH go build -ldflags="-s -w" -a -o $output_name .
     if [ $? -ne 0 ]; then
         echo 'An error has occurred! Aborting the script execution...'
         exit 1