Initialization script for a quick GameMaker linux builder on DigitalOcean, Ubuntu 20.04

gamemaker-builder-cloud-init.sh

#!/bin/bash

echo "deb http://security.ubuntu.com/ubuntu xenial-security main" > /etc/apt/sources.list.d/xenial-security.list

apt-get update
apt-get install --no-install-recommends --yes \
	curl \
	gnupg \
	ca-certificates \
	build-essential \
	clang \
	libssl-dev \
	libxrandr-dev \
	libxxf86vm-dev \
	libopenal-dev \
	libgl1-mesa-dev \
	libglu1-mesa-dev \
	zlib1g-dev \
	libcurl4-openssl-dev \
	mono-complete \
	zip \
	unzip \
	ffmpeg \
	rsync \
	git \
	libxxf86vm1 \
	libgl1 \
	libssl1.1 \
	libxrandr2 \
	libglu1-mesa \
	libcurl4 \
	libopenal1 \
	xvfb \
	libssl1.0.0 \
	libcurl3-gnutls \
	lsb-release \
	nginx

STEAMRUNTIME=/opt/steam-runtime/
if ! [ -d "$STEAMRUNTIME" ]; then
	mkdir $STEAMRUNTIME
	curl -Ls https://repo.steampowered.com/steamrt-images-scout/snapshots/latest-steam-client-general-availability/com.valvesoftware.SteamRuntime.Sdk-amd64,i386-scout-sysroot.tar.gz | tar -xzf - -C $STEAMRUNTIME
fi

LINUXDEPLOY=/usr/local/bin/linuxdeploy
if ! [ -f "$LINUXDEPLOY" ]; then
	curl -Ls https://github.com/linuxdeploy/linuxdeploy/releases/download/continuous/linuxdeploy-x86_64.AppImage -o linuxdeploy-x86_64.AppImage
	install -m 0755 linuxdeploy-x86_64.AppImage $LINUXDEPLOY
	rm linuxdeploy-x86_64.AppImage
fi

APPIMAGETOOL=/usr/local/bin/appimagetool
if ! [ -f "$APPIMAGETOOL" ]; then
	curl -Ls https://github.com/AppImage/AppImageKit/releases/download/continuous/appimagetool-x86_64.AppImage -o appimagetool-x86_64.AppImage
	install -m 0755 appimagetool-x86_64.AppImage $APPIMAGETOOL
	rm appimagetool-x86_64.AppImage
fi

# install the fake display startup script
cat >/etc/systemd/system/gamemaker-fake-display.service <<EOF
[Unit]
Description=GameMaker Server Stuff
 
[Service]
ExecStart=Xvfb :0 -screen 0 400x400x24
 
[Install]
WantedBy=default.target
EOF

# process watcher to ensure no two AppRun are running
# this is needed as of IDE v2023.11.0.121 which won't shut down old AppRuns
cat >/usr/local/bin/gamemaker-process-watcher.sh <<'EOF'
#!/bin/bash
while sleep 1; do if [[ $(pgrep -f "AppRun -debugoutput" | wc -l) -gt 1 ]]; then pkill -f "AppRun -debugoutput"; fi; done
EOF

cat >/etc/systemd/system/gamemaker-process-watcher.service <<EOF
[Unit]
Description=GameMaker Server Stuff
 
[Service]
ExecStart=/usr/local/bin/gamemaker-process-watcher.sh
 
[Install]
WantedBy=default.target
EOF

# default display for new games
cat >/etc/profile.d/gamemaker-fake-display-0.sh <<'EOF'
export DISPLAY=:0
EOF

chmod 744 /etc/profile.d/gamemaker-fake-display-0.sh
chmod 744 /usr/local/bin/gamemaker-process-watcher.sh
chmod 664 /etc/systemd/system/gamemaker-process-watcher.service
chmod 664 /etc/systemd/system/gamemaker-fake-display.service

systemctl daemon-reload
systemctl enable gamemaker-process-watcher
systemctl enable gamemaker-fake-display
systemctl start gamemaker-process-watcher
systemctl start gamemaker-fake-display

# self-signed certificate and nginx reverse proxy
openssl req -x509 -nodes -days 3650 -newkey rsa:2048 -keyout /etc/ssl/private/nginx-selfsigned.key -out /etc/ssl/certs/nginx-selfsigned.crt  -subj "/C=US/ST=New York/L=New York City/O=Internet/OU=./CN=./emailAddress=."

cat >/etc/nginx/sites-enabled/gamemaker-5000.conf <<'EOF'
server {
  listen 443 ssl;

  ssl_certificate /etc/ssl/certs/nginx-selfsigned.crt;
  ssl_certificate_key /etc/ssl/private/nginx-selfsigned.key;

  location / {
    proxy_set_header Host $host;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection $http_connection;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_http_version 1.1;
    proxy_pass http://127.0.0.1:5000;
  }
}
EOF

rm /etc/nginx/sites-enabled/default
systemctl restart nginx