Update build process

.drone.yml

@@ -5,7 +5,7 @@ type: docker
 
 steps:
 - name: build
-  image: debian
+  image: debian:stable-slim
   commands:
   - apt-get update
   - apt-get upgrade -y

build-linux.sh

@@ -1,3 +1,3 @@
 #!/bin/bash
 mkdir -p bin/
-g++ main.cpp -o bin/modlimitfix --std=c++17
+g++ main.cpp -o bin/modlimitfix -std=c++17 -lstdc++ -static

build-win.sh

@@ -1,4 +1,4 @@
 #!/bin/bash
 mkdir -p bin/
 # Use MINGW for cross-compilation
-x86_64-w64-mingw32-g++ main.cpp -o bin/modlimitfix.exe -std=c++17 --static
+x86_64-w64-mingw32-g++ main.cpp -o bin/modlimitfix.exe -std=c++17 -lstdc++ -static