diff --git a/Dockerfile b/Dockerfile
index 481e3331..ef0a241b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -61,7 +61,7 @@ RUN easy-add --var os=${TARGETOS} --var arch=${TARGETARCH}${TARGETVARIANT} \
   --var version=0.1.1 --var app=maven-metadata-release --file {{.app}} \
   --from https://github.com/itzg/{{.app}}/releases/download/{{.version}}/{{.app}}_{{.version}}_{{.os}}_{{.arch}}.tar.gz
 
-ARG MC_HELPER_VERSION=1.16.2
+ARG MC_HELPER_VERSION=1.16.3
 ARG MC_HELPER_BASE_URL=https://github.com/itzg/mc-image-helper/releases/download/v${MC_HELPER_VERSION}
 RUN curl -fsSL ${MC_HELPER_BASE_URL}/mc-image-helper-${MC_HELPER_VERSION}.tgz \
   | tar -C /usr/share -zxf - \
diff --git a/README.md b/README.md
index a52e05cd..fba72354 100644
--- a/README.md
+++ b/README.md
@@ -69,7 +69,7 @@ By default, the container will download the latest version of the "vanilla" [Min
       * [Auto-downloading SpigotMC/Bukkit/PaperMC plugins](#auto-downloading-spigotmcbukkitpapermc-plugins)
       * [Downloadable mod/plugin pack for Forge, Fabric, and Bukkit-like Servers](#downloadable-modplugin-pack-for-forge-fabric-and-bukkit-like-servers)
       * [<strong>ForgeAPI</strong> usage to use non-version specific projects](#forgeapi-usage-to-use-non-version-specific-projects)
-      * [Generic pack file](#generic-pack-file)
+      * [Generic pack files](#generic-pack-files)
       * [Mod/Plugin URL Listing File](#modplugin-url-listing-file)
       * [Remove old mods/plugins](#remove-old-modsplugins)
    * [Working with world data](#working-with-world-data)
@@ -141,7 +141,7 @@ By default, the container will download the latest version of the "vanilla" [Min
    * [Running on RaspberryPi](#running-on-raspberrypi)
    * [Contributing](#contributing)
 
-<!-- Added by: runner, at: Fri Jan 28 00:42:47 UTC 2022 -->
+<!-- Added by: runner, at: Wed Feb  2 02:53:20 UTC 2022 -->
 
 <!--te-->
 
@@ -244,6 +244,8 @@ If you had used the commands in the first section, without the `-v` volume attac
 
 > In this example, it is assumed the original container was given a `--name` of "mc", so change the container identifier accordingly.
 
+> You can also locate the Docker-managed directory from the `Source` field obtained from `docker inspect <container id or name> -f "{{json .Mounts}}"`
+
 First, stop the existing container:
 ```shell
 docker stop mc
@@ -391,7 +393,7 @@ To troubleshoot any issues with memory allocation reported by the JVM, set the e
 
 ### Running a Forge Server
 
-Enable [Forge server](http://www.minecraftforge.net/wiki/) mode by adding a `-e TYPE=FORGE` to your command-line.
+Enable [Forge server](http://www.minecraftforge.net/) mode by adding a `-e TYPE=FORGE` to your command-line.
 
 The overall version is specified by `VERSION`, [as described in the section above](#versions) and will run the recommended Forge version by default. You can also choose to run a specific Forge version with `FORGEVERSION`, such as `-e FORGEVERSION=14.23.5.2854`.
 
@@ -798,11 +800,21 @@ Example of expected ForgeAPI file format.
 ]
 ```
 
-### Generic pack file
+### Generic pack files
 
-To install all of the server content (jars, mods, plugins, configs, etc) from a zip file, such as a CurseForge modpack that is missing a server start script, then set `GENERIC_PACK` to the container path of the zip file. That, combined with `TYPE`, allows for custom content along with container managed server download and install.  
+To install all of the server content (jars, mods, plugins, configs, etc) from a zip or tgz file, such as a CurseForge modpack that is missing a server start script, then set `GENERIC_PACK` to the container path or URL of the archive file.
 
-If multiple generic packs need to be applied together, set `GENERIC_PACKS` instead, with a comma separated list of zip file paths and/or URLs to zip files.
+If multiple generic packs need to be applied together, set `GENERIC_PACKS` instead, with a comma separated list of archive file paths and/or URLs to files.
+
+To avoid repetition, each entry will be prefixed by the value of `GENERIC_PACKS_PREFIX` and suffixed by the value of `GENERIC_PACKS_SUFFIX`, both of which are optional. For example, the following variables
+
+```
+GENERIC_PACKS=configs-v9.0.1,mods-v4.3.6
+GENERIC_PACKS_PREFIX=https://cdn.example.org/
+GENERIC_PACKS_SUFFIX=.zip
+```
+
+would expand to `https://cdn.example.org/configs-v9.0.1.zip,https://cdn.example.org/mods-v4.3.6.zip`.
 
 ### Mod/Plugin URL Listing File 
 
diff --git a/scripts/start-finalExec b/scripts/start-finalExec
index 3f282325..9cc2c7d0 100755
--- a/scripts/start-finalExec
+++ b/scripts/start-finalExec
@@ -20,13 +20,15 @@ if [ -n "$ICON" ]; then
 fi
 
 canUseRollingLogs=true
+useFallbackJvmFlag=false
 
 patchLog4jConfig() {
   file=${1?}
   url=${2?}
   if ! get -o "$file" "$url"; then
-    log "ERROR: failed to download corrected log4j config"
-    exit 1
+    log "ERROR: failed to download corrected log4j config, fallback to JVM flag"
+    useFallbackJvmFlag=true
+    return 1
   fi
   JVM_OPTS="-Dlog4j.configurationFile=${file} ${JVM_OPTS}"
   canUseRollingLogs=false
@@ -46,6 +48,10 @@ elif isType PURPUR && versionLessThan 1.17; then
 elif isType PURPUR && versionLessThan 1.18.1; then
   patchLog4jConfig purpur_log4j2_117.xml https://purpurmc.org/docs/xml/purpur_log4j2_117.xml
 elif versionLessThan 1.18.1; then
+  useFallbackJvmFlag=true
+fi
+
+if ${useFallbackJvmFlag}; then
   JVM_OPTS="-Dlog4j2.formatMsgNoLookups=true ${JVM_OPTS}"
 fi
 
diff --git a/scripts/start-setupModpack b/scripts/start-setupModpack
index 5dc66e38..88281d4a 100755
--- a/scripts/start-setupModpack
+++ b/scripts/start-setupModpack
@@ -188,13 +188,16 @@ esac
 fi
 
 : "${GENERIC_PACKS:=${GENERIC_PACK}}"
+: "${GENERIC_PACKS_PREFIX:=}"
+: "${GENERIC_PACKS_SUFFIX:=}"
 
 if [[ "${GENERIC_PACKS}" ]]; then
   IFS=',' read -ra packs <<< "${GENERIC_PACKS}"
 
   packFiles=()
-  for pack in "${packs[@]}"; do
-    if isURL "$pack"; then
+  for packEntry in "${packs[@]}"; do
+    pack="${GENERIC_PACKS_PREFIX}${packEntry}${GENERIC_PACKS_SUFFIX}"
+    if isURL "${pack}"; then
       mkdir -p /data/packs
       if ! outfile=$(get -o /data/packs --output-filename --skip-existing "$pack"); then
         log "ERROR: failed to download $pack"
diff --git a/tests/setuponlytests/generic-packs-prefix/docker-compose.yml b/tests/setuponlytests/generic-packs-prefix/docker-compose.yml
new file mode 100644
index 00000000..4d84fa67
--- /dev/null
+++ b/tests/setuponlytests/generic-packs-prefix/docker-compose.yml
@@ -0,0 +1,14 @@
+version: "3"
+
+services:
+  mc:
+    image: ${IMAGE_TO_TEST:-itzg/minecraft-server}
+    environment:
+      EULA: "true"
+      SETUP_ONLY: "TRUE"
+      GENERIC_PACKS: testing
+      GENERIC_PACKS_PREFIX: /packs/
+      GENERIC_PACKS_SUFFIX: .zip
+    volumes:
+      - ./packs:/packs
+      - ./data:/data
diff --git a/tests/setuponlytests/generic-packs-prefix/packs/testing.zip b/tests/setuponlytests/generic-packs-prefix/packs/testing.zip
new file mode 100644
index 00000000..3bab4151
Binary files /dev/null and b/tests/setuponlytests/generic-packs-prefix/packs/testing.zip differ
diff --git a/tests/setuponlytests/generic-packs-prefix/verify.sh b/tests/setuponlytests/generic-packs-prefix/verify.sh
new file mode 100644
index 00000000..cb4652ec
--- /dev/null
+++ b/tests/setuponlytests/generic-packs-prefix/verify.sh
@@ -0,0 +1 @@
+mc-image-helper assert fileExists one.txt mods/two.txt
diff --git a/tests/setuponlytests/generic-packs/docker-compose.yml b/tests/setuponlytests/generic-packs/docker-compose.yml
index 071c430d..b5450605 100644
--- a/tests/setuponlytests/generic-packs/docker-compose.yml
+++ b/tests/setuponlytests/generic-packs/docker-compose.yml
@@ -1,12 +1,18 @@
 version: "3"
 
 services:
+  web:
+    image: nginx
+    volumes:
+      - ./web:/usr/share/nginx/html
   mc:
+    depends_on:
+      - web
     image: ${IMAGE_TO_TEST:-itzg/minecraft-server}
     environment:
       EULA: "true"
       SETUP_ONLY: "TRUE"
-      GENERIC_PACKS: https://github.com/itzg/mc-image-helper/releases/download/v1.9.5/mc-image-helper-1.9.5.zip,/packs/testing.zip
+      GENERIC_PACKS: http://web/configs.zip,/packs/testing.zip
     volumes:
       - ./packs:/packs
       - ./data:/data
diff --git a/tests/setuponlytests/generic-packs/verify.sh b/tests/setuponlytests/generic-packs/verify.sh
index 15166fe9..b769bd13 100644
--- a/tests/setuponlytests/generic-packs/verify.sh
+++ b/tests/setuponlytests/generic-packs/verify.sh
@@ -1 +1,2 @@
-mc-image-helper assert fileExists one.txt mods/two.txt
\ No newline at end of file
+mc-image-helper assert fileExists one.txt mods/two.txt
+mc-image-helper assert fileExists config/opt.yml
\ No newline at end of file
diff --git a/tests/setuponlytests/generic-packs/web/configs.zip b/tests/setuponlytests/generic-packs/web/configs.zip
new file mode 100644
index 00000000..3848a7f6
Binary files /dev/null and b/tests/setuponlytests/generic-packs/web/configs.zip differ
diff --git a/tests/setuponlytests/test.sh b/tests/setuponlytests/test.sh
index 7eae2b5e..748b31ad 100644
--- a/tests/setuponlytests/test.sh
+++ b/tests/setuponlytests/test.sh
@@ -30,7 +30,7 @@ $logs
 "
     result=1
   elif [ -f verify.sh ]; then
-    if ! docker run --rm --entrypoint bash -v "${PWD}/data":/data -v "${PWD}/verify.sh":/verify "${IMAGE_TO_TEST:-itzg/minecraft-server}" /verify; then
+    if ! docker run --rm --entrypoint bash -v "${PWD}/data":/data -v "${PWD}/verify.sh":/verify "${IMAGE_TO_TEST:-itzg/minecraft-server}" -e /verify; then
       echo "${folder} verify FAILED"
       result=1
     else