feat: add mod downloading feature

.env

@@ -1,2 +1,8 @@
+# Steam account
 STEAM_CMD_USER=
-STEAM_CMD_PASSWORD=
+STEAM_CMD_PASSWORD=
+
+# Semicolon-separated list of mods to install (without quotes).
+# You can find a mod ID in workshop content URL
+# Example: MOD_IDS=2663169692;1559212036
+MOD_IDS=

.gitignore

@@ -1,5 +1,6 @@
 # Folders
 server/**
+.github/**
 
 # Files
 .env

README.md

@@ -9,33 +9,28 @@
 ## Configure credentials
 
 To run the server you must login into account with purchased Dayz.
-Docker-compose uses following variables from .env file to log into steam   
+Update .env with the account info
 
 ``` txt
 STEAM_CMD_USER=<steam account login>
 STEAM_CMD_PASSWORD=<steam account password>
 ```
 
-## Configure server
+## Select mods to install
 
-Edit ./serverDZ.cfg
-
-## Install mods
-
-Follow this guide https://steamcommunity.com/app/221100/discussions/0/4794664409789522473/ to install mods
+To install mods edit MOD_IDS in .env file. Scripts will automatically download mods when you start the container.
 
 ## Run the server
 
 Execute following command in the terminal
 ```
-docker compose up --build --force-recreate
+docker compose up
 ```
 
 ## Connect from DayZ Launcher
 
 - Run DayZ Launcher
-- Go to Parameters > ALL PARAMETERS tab
+- Go to tab Parameters > ALL PARAMETERS
 - Go to Client section and set following parameters
   - Server address: 127.0.0.1
   - Server Port: 2306
-  - Server Password: 123456

docker-compose.yml

@@ -6,8 +6,8 @@ services:
         FROM steamcmd/steamcmd:ubuntu-18
         ENV DEBIAN_FRONTEND=noninteractive
         RUN apt-get update && \
-            apt-get install -y libcap-dev && \
-            rm -rf /var/lib/apt/lists/*
+          apt-get install -y libcap-dev rsync && \
+          rm -rf /var/lib/apt/lists/*
         RUN addgroup --gid 1000 admin && \
             adduser --no-create-home --uid 1000 --gid 1000 admin 
         ENV SERVER_DIR=/server
@@ -21,25 +21,40 @@ services:
       - "27017:27017/udp"
   
     volumes:
+      - steam_persist:/root/.steam/
       - ./server:/server
-      - ./serverDZ.cfg:/server/serverDZ.cfg:ro
-    
+      - ./scripts:/scripts:ro
+
     user: "1000:1000"
     env_file: ".env"
-    entrypoint: ["/bin/sh","-c"]
-    
-    command: 
+    entrypoint: ["/bin/sh", "-c"]
+
+    command:
       - |
+        set -e
+        cd "$${SERVER_DIR}/"
+
+        echo "Updating DayZ Server..."
         steamcmd \
           +force_install_dir "$${SERVER_DIR}" \
           +login "$${STEAM_CMD_USER}" "$${STEAM_CMD_PASSWORD}" \
           +app_update 223350 \
           +quit
-  
-        cd $${SERVER_DIR}
+
+        echo "Installing mods..."
+        /scripts/install_mods.sh "$${MOD_IDS}" "$${SERVER_DIR}"
+
+        echo "Copying keys..."
+        /scripts/install_keys.sh "$${SERVER_DIR}" "$${SERVER_DIR}/keys"
+
+        echo "Starting server..."
         ./DayZServer \
-          -config="serverDZ.cfg" \
-          -mod="" \
+          -config="$${SERVER_DIR}/serverDZ.cfg" \
+          -mod="$${MOD_IDS}" \
           -port=2306 \
           -steamQueryPort=27017 \
-          -profiles="profiles"
+          -profiles="$${SERVER_DIR}/profiles"
+
+volumes:
+  # Persistent steam folder to skip 2FA after first login and preserve downloaded content
+  steam_persist: {}

install_keys.sh

@@ -1,2 +0,0 @@
-# Copy all keys from mods located in "server"
-find ./server/ -path "./server/keys" -prune -o -type f -name "*.bikey" -exec cp {} ./server/keys/ \;

scripts/install_keys.sh

@@ -0,0 +1,39 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+print_help() {
+    echo 'Copy .bikey files from source directory and subdirectories (excluding destination) to destination'
+    echo 'Usage: ./install_keys.sh "<source dir>" "<destination dir>"'
+    echo 'Example: ./install_keys.sh "/server" "/server/keys"'
+}
+
+# Get paths from args
+SRC_DIR=${1:-}
+DST_DIR=${2:-}
+
+if [ -z "$SRC_DIR" ] || [ ! -d "$SRC_DIR" ] || [ -z "$DST_DIR" ] || [ ! -d "$DST_DIR" ]; then
+	print_help
+	exit 1
+fi
+
+echo "Extracting keys from mods in $SRC_DIR..."
+
+FOUND=0
+# Iterate source directories
+for MOD_PATH in "$SRC_DIR"/*; do
+	if [ -d "$MOD_PATH" ] && [ "$(basename "$MOD_PATH")" != "$(basename "$DST_DIR")" ]; then
+		while IFS= read -r -d $'\0' file; do
+			echo "Found key: $file" >&2
+			cp -u -- "$file" "$DST_DIR/"
+			FOUND=1
+		done < <(find "$MOD_PATH" -type f -name "*.bikey" -print0)
+	fi
+done
+
+if [ "$FOUND" -eq 0 ]; then
+	echo "No .bikey files found"
+else
+	echo "Keys installed successfully"
+fi
+
+exit 0

scripts/install_mods.sh

@@ -0,0 +1,64 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+print_help() {
+    echo 'DayZ mod installer — downloads mods via steamcmd and rsyncs them to destination directory'
+    echo 'Usage: ./install_mods.sh "<semicolon-separated mod ids> "<destination directory>"'
+    echo 'Env expected: STEAM_CMD_USER, STEAM_CMD_PASSWORD'
+}
+
+WORKSHOP_APP_ID=${WORKSHOP_APP_ID:-221100}
+
+# Accept mod IDs and installation root as arguments
+RAW_IDS=${1:-}
+DST_ROOT=${2:-}
+
+# Skip if no mods to install
+if [ -z "$RAW_IDS" ]; then
+  echo "No mods to install. Skipping..."
+  exit 0
+fi
+
+# Fail if target dir does not exist
+if [ ! -d "$DST_ROOT" ]; then
+  print_help
+  exit 1
+fi
+
+# Normalize separators: turn semicolons into spaces, then split into array
+RAW_IDS="${RAW_IDS//;/ }"
+read -ra MOD_IDS <<< "$RAW_IDS"
+
+echo "Installing ${#MOD_IDS[@]} mods..."
+
+# Build steamcmd arguments
+STEAMCMD_CMD=(+login "${STEAM_CMD_USER}")
+for MOD_ID in "${MOD_IDS[@]}"; do
+  STEAMCMD_CMD+=(+workshop_download_item ${WORKSHOP_APP_ID} ${MOD_ID})
+done
+STEAMCMD_CMD+=(+quit)
+
+# Run steamcmd
+steamcmd ${STEAMCMD_CMD[*]}
+
+# Rsync downloaded mods into the destination root
+mkdir -p "$DST_ROOT"
+
+for MOD_ID in "${MOD_IDS[@]}"; do
+  SRC="/root/.steam/SteamApps/workshop/content/${WORKSHOP_APP_ID}/${MOD_ID}"
+  
+  if [ ! -d "$SRC" ]; then
+    echo "Error: Mod directory not found: $SRC"
+    exit 1
+  fi
+  
+  DEST="$DST_ROOT/$MOD_ID"
+  mkdir -p "$DEST"
+  rsync -a --delete -- "$SRC/" "$DEST/"
+  
+  # Set ownership for container user
+  chown -R 1000:1000 "$DEST" 2>/dev/null || true
+done
+
+echo "Mods installed successfully"
+exit 0

serverDZ.cfg

@@ -1,34 +0,0 @@
-hostname = "LOCAL SERVER";      // Server name
-password = "123456";            // Password to connect to the server
-passwordAdmin = "123456";       // Password to become a server admin
-description = "LOCAL SERVER";   // Description of the server. Gets displayed to users in client server browser.
-enableWhitelist = 0;            // Enable/disable whitelist (value 0-1)
-maxPlayers = 60;                // Maximum amount of players
-verifySignatures = 2;           // Verifies .pbos against .bisign files. (only 2 is supported)
-forceSameBuild = 1;             // When enabled, the server will allow the connection only to clients with same the .exe revision as the server (value 0-1)
-disableVoN = 0;                 // Enable/disable voice over network (value 0-1)
-vonCodecQuality = 20;           // Voice over network codec quality, the higher the better (values 0-30)
-shardId = "123abc";			    // Six alphanumeric characters for Private server
-disable3rdPerson=0;             // Toggles the 3rd person view for players (value 0-1)
-disableCrosshair=0;             // Toggles the cross-hair (value 0-1)
-disablePersonalLight = 1;       // Disables personal light for all clients connected to server
-lightingConfig = 1;             // 0 for brighter night setup, 1 for darker night setup
-serverTime="SystemTime";        // Initial in-game time of the server. "SystemTime" means the local time of the machine. Another possibility is to set the time to some value in "YYYY/MM/DD/HH/MM" format, f.e. "2015/4/8/17/23" .
-serverTimeAcceleration=12;      // Accelerated Time (value 0-24)// This is a time multiplier for in-game time. In this case, the time would move 24 times faster than normal, so an entire day would pass in one hour.
-serverNightTimeAcceleration=1;  // Accelerated Nigh Time - The numerical value being a multiplier (0.1-64) and also multiplied by serverTimeAcceleration value. Thus, in case it is set to 4 and serverTimeAcceleration is set to 2, night time would move 8 times faster than normal. An entire night would pass in 3 hours.
-serverTimePersistent=0;         // Persistent Time (value 0-1)// The actual server time is saved to storage, so when active, the next server start will use the saved time value.
-guaranteedUpdates=1;            // Communication protocol used with game server (use only number 1)
-loginQueueConcurrentPlayers=5;  // The number of players concurrently processed during the login process. Should prevent massive performance drop during connection when a lot of people are connecting at the same time.
-loginQueueMaxPlayers=500;       // The maximum number of players that can wait in login queue
-instanceId = 1;                 // DayZ server instance id, to identify the number of instances per box and their storage folders with persistence files
-storageAutoFix = 1;             // Checks if the persistence files are corrupted and replaces corrupted ones with empty ones (value 0-1)
- 
-class Missions
-{
-    class DayZ
-    {
-        template="dayzOffline.chernarusplus"; // Mission to load on server startup. <MissionName>.<TerrainName>
-					      // Vanilla mission: dayzOffline.chernarusplus
-					      // DLC mission: dayzOffline.enoch
-    };
-};