Set the Java server.properties values, then copy or download the file.
server-port=25565
gamemode=survival
difficulty=easy
max-players=20
motd=A Serververse server
level-name=world
level-seed=
level-type=minecraft:normal
generator-settings={}
pvp=true
hardcore=false
allow-flight=false
force-gamemode=false
spawn-monsters=true
spawn-animals=true
spawn-npcs=true
spawn-protection=16
online-mode=true
white-list=false
enforce-whitelist=false
enable-command-block=false
op-permission-level=4
function-permission-level=2
view-distance=10
simulation-distance=10
max-tick-time=60000
max-world-size=29999984
server-ip=
network-compression-threshold=256
rate-limit=0
enable-jmx-monitoring=false
enable-rcon=false
rcon.port=25575
rcon.password=
broadcast-rcon-to-ops=true
broadcast-console-to-ops=true
enable-query=false
query.port=25565
enable-status=true
hide-online-players=false
prevent-proxy-connections=false
use-native-transport=true
resource-pack=
resource-pack-sha1=
require-resource-pack=false
resource-pack-prompt=