Better script for docker (#54501)

The linux one shot script is not a drop-in for the docker script. Let's separate the two.

.github/CODEOWNERS

@@ -25,6 +25,8 @@
 /code/modules/admin/verbs/adminhelp.dm @Cyberboss
 /code/modules/admin/verbs/adminpm.dm @Cyberboss
 /code/modules/mapping/ @Cyberboss
+/tools/LinuxOneShot/ @Cyberboss
+/tools/tgs4_scripts/ @Cyberboss
 
 # Jared-Fogle
 

tools/LinuxOneShot/SetupProgram/PreCompile.sh

@@ -1,5 +1,7 @@
 #!/bin/bash
 
+# REPO MAINTAINERS: KEEP CHANGES TO THIS IN SYNC WITH /tools/tgs4_scripts/PreCompile.sh
+
 set -e
 set -x
 
@@ -26,7 +28,7 @@ if ! [ -x "$has_cargo" ]; then
 	. ~/.profile
 fi
 
-# apt packages
+# apt packages, libssl needed by rust-g but not included in TGS barebones install
 if ! { [ -x "$has_git" ] && [ -x "$has_grep" ] && [ -f "/usr/lib/i386-linux-gnu/libssl.so" ] && [ -f "/usr/bin/mysql" ] && [ -d "/usr/include/mysql" ]; }; then
 	echo "Installing apt dependencies..."
 	if ! [ -x "$has_sudo" ]; then

tools/tgs4_scripts/PreCompile.sh

@@ -0,0 +1,62 @@
+#!/bin/bash
+
+# REPO MAINTAINERS: KEEP CHANGES TO THIS IN SYNC WITH /tools/LinuxOneShot/SetupProgram/PreCompile.sh
+
+set -e
+set -x
+
+#load dep exports
+#need to switch to game dir for Dockerfile weirdness
+original_dir=$PWD
+cd "$1"
+. dependencies.sh
+cd "$original_dir"
+
+#find out what we have (+e is important for this)
+set +e
+has_git="$(command -v git)"
+has_cargo="$(command -v ~/.cargo/bin/cargo)"
+has_sudo="$(command -v sudo)"
+has_grep="$(command -v grep)"
+set -e
+
+# install cargo if needful
+if ! [ -x "$has_cargo" ]; then
+	echo "Installing rust..."
+	curl https://sh.rustup.rs -sSf | sh -s -- -y --default-host i686-unknown-linux-gnu
+	. ~/.profile
+fi
+
+# apt packages, libssl needed by rust-g but not included in TGS barebones install
+if ! { [ -x "$has_git" ] && [ -x "$has_grep" ] && [ -f "/usr/lib/i386-linux-gnu/libssl.so" ] }; then
+	echo "Installing apt dependencies..."
+	if ! [ -x "$has_sudo" ]; then
+		dpkg --add-architecture i386
+		apt-get update
+		apt-get install -y git libssl-dev:i386
+		rm -rf /var/lib/apt/lists/*
+	else
+		sudo dpkg --add-architecture i386
+		sudo apt-get update
+		sudo apt-get install -y git libssl-dev:i386
+		sudo rm -rf /var/lib/apt/lists/*
+	fi
+fi
+
+#update rust-g
+if [ ! -d "rust-g" ]; then
+	echo "Cloning rust-g..."
+	git clone https://github.com/tgstation/rust-g
+else
+	echo "Fetching rust-g..."
+	cd rust-g
+	git fetch
+	cd ..
+fi
+
+echo "Deploying rust-g..."
+cd rust-g
+git checkout "$RUST_G_VERSION"
+~/.cargo/bin/cargo build --release
+mv target/release/librust_g.so "$1/rust_g"
+cd ..