build(deps): bump the patches group in /docs with 1 update

Bumps the patches group in /docs with 1 update: [mkdocs-material](https://github.com/squidfunk/mkdocs-material).

- [Release notes](https://github.com/squidfunk/mkdocs-material/releases)
- [Changelog](https://github.com/squidfunk/mkdocs-material/blob/master/CHANGELOG)
- [Commits](https://github.com/squidfunk/mkdocs-material/compare/9.4.7...9.4.8)

---
updated-dependencies:
- dependency-name: mkdocs-material
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: patches
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/dependabot.yml

@@ -21,3 +21,4 @@ updates:
           - "*"
         update-types:
           - patch
+          - minor

.github/workflows/build-multiarch.yml

@@ -19,8 +19,8 @@ jobs:
         # NOTE: the "latest" variant is identified in the Docker meta step's 'latest' config
         variant:
           - java21-graalvm
-          - java20
-          - java20-alpine
+          - java21
+          - java21-alpine
           - java17
           - java17-graalvm
           - java17-jdk
@@ -40,13 +40,12 @@ jobs:
             baseImage: container-registry.oracle.com/graalvm/jdk:21-ol8
             platforms: linux/amd64,linux/arm64
             mcVersion: 1.20.2
-        # JAVA 20:
-          - variant: java20
-            baseImage: eclipse-temurin:20-jre
+          - variant: java21
+            baseImage: eclipse-temurin:21-jre
             platforms: linux/amd64,linux/arm64
             mcVersion: 1.19.3
-          - variant: java20-alpine
-            baseImage: eclipse-temurin:20-jre-alpine
+          - variant: java21-alpine
+            baseImage: eclipse-temurin:21-jre-alpine
             platforms: linux/amd64
             mcVersion: 1.19.3
         # JAVA 17:
@@ -112,7 +111,7 @@ jobs:
     runs-on: ubuntu-20.04
     steps:
       - name: Checkout
-        uses: actions/checkout@v4.1.0
+        uses: actions/checkout@v4.1.1
         with:
           # for build-files step
           fetch-depth: 0

.github/workflows/verify-pr.yml

@@ -16,14 +16,14 @@ jobs:
       fail-fast: false
       matrix:
         variant:
-          - java20
+          - java21
           - java17
           - java17-alpine
           - java8-multiarch
         include:
-        # JAVA 20:
-          - variant: java20
-            baseImage: eclipse-temurin:20-jre
+        # JAVA 21:
+          - variant: java21
+            baseImage: eclipse-temurin:21-jre
             platforms: linux/amd64,linux/arm64
             mcVersion: 1.19.4
         # JAVA 17:
@@ -45,7 +45,7 @@ jobs:
     runs-on: ubuntu-20.04
     steps:
       - name: Checkout
-        uses: actions/checkout@v4.1.0
+        uses: actions/checkout@v4.1.1
         with:
           # for build-files step
           fetch-depth: 0

Dockerfile

@@ -22,27 +22,27 @@ COPY --chmod=644 files/sudoers* /etc/sudoers.d
 
 EXPOSE 25565
 
-ARG EASY_ADD_VER=0.8.0
+ARG EASY_ADD_VER=0.8.1
 ADD https://github.com/itzg/easy-add/releases/download/${EASY_ADD_VER}/easy-add_${TARGETOS}_${TARGETARCH}${TARGETVARIANT} /usr/bin/easy-add
 RUN chmod +x /usr/bin/easy-add
 
 RUN easy-add --var os=${TARGETOS} --var arch=${TARGETARCH}${TARGETVARIANT} \
-  --var version=1.7.0 --var app=restify --file {{.app}} \
+  --var version=1.7.1 --var app=restify --file {{.app}} \
   --from https://github.com/itzg/{{.app}}/releases/download/{{.version}}/{{.app}}_{{.version}}_{{.os}}_{{.arch}}.tar.gz
 
 RUN easy-add --var os=${TARGETOS} --var arch=${TARGETARCH}${TARGETVARIANT} \
-  --var version=1.6.2 --var app=rcon-cli --file {{.app}} \
+  --var version=1.6.3 --var app=rcon-cli --file {{.app}} \
   --from https://github.com/itzg/{{.app}}/releases/download/{{.version}}/{{.app}}_{{.version}}_{{.os}}_{{.arch}}.tar.gz
 
 RUN easy-add --var os=${TARGETOS} --var arch=${TARGETARCH}${TARGETVARIANT} \
-  --var version=0.12.3 --var app=mc-monitor --file {{.app}} \
+  --var version=0.12.5 --var app=mc-monitor --file {{.app}} \
   --from https://github.com/itzg/{{.app}}/releases/download/{{.version}}/{{.app}}_{{.version}}_{{.os}}_{{.arch}}.tar.gz
 
 RUN easy-add --var os=${TARGETOS} --var arch=${TARGETARCH}${TARGETVARIANT} \
-  --var version=1.9.0 --var app=mc-server-runner --file {{.app}} \
+  --var version=1.9.1 --var app=mc-server-runner --file {{.app}} \
   --from https://github.com/itzg/{{.app}}/releases/download/{{.version}}/{{.app}}_{{.version}}_{{.os}}_{{.arch}}.tar.gz
 
-ARG MC_HELPER_VERSION=1.36.3
+ARG MC_HELPER_VERSION=1.36.5
 ARG MC_HELPER_BASE_URL=https://github.com/itzg/mc-image-helper/releases/download/${MC_HELPER_VERSION}
 # used for cache busting local copy of mc-image-helper
 ARG MC_HELPER_REV=1

docs/configuration/server-properties.md

@@ -40,6 +40,8 @@ Valid values are: `peaceful`, `easy`, `normal`, and `hard`, and an
 error message will be output in the logs if it's not one of these
 values.
 
+Refer to [the Minecraft wiki](https://minecraft.wiki/w/Difficulty)
+
 ### Whitelist Players
 
 !!! warning "For public servers" 
@@ -303,7 +305,43 @@ environment variable set to `false`, such as
 By default, a standard world is generated with hills, valleys, water, etc. A different level type can
 be configured by setting `LEVEL_TYPE` to [an expected type listed here](https://minecraft.wiki/w/Server.properties#level-type).
 
-For some of the level types, `GENERATOR_SETTINGS` can be used to further customize the world generation [as described here](https://minecraft.wiki/w/Server.properties#generator-settings).
+For some of the level types, `GENERATOR_SETTINGS` can be used to further customize the world generation.
+
+To configure the `GENERATOR_SEETINGS` you need to add the appropriate `GeneratorOptions` JSON configuration. In the case of a superflat world, you may omit the `flat_world_options`.
+
+The layers are applied from -64 and up and are added in the order of the list
+
+Example for a superflat world:
+
+- 1x bedrock
+- 2x stone
+- 15x sandstone
+- Desert biome
+
+```yaml
+LEVEL_TYPE: FLAT
+GENERATOR_SETTINGS: >-4
+    {
+        "layers": [
+            {
+                "block": "minecraft:bedrock",
+                "height": 1
+            },
+            {
+                "block": "minecraft:stone",
+                "height": 2
+            },
+            {
+                "block": "minecraft:sandstone",
+                "height": 15
+            }
+        ],
+        "biome": "minecraft:desert"
+    }
+
+
+```
+For more details, check the [official wiki](https://minecraft.wiki/w/Java_Edition_level_format#generatorOptions_tag_format).
 
 ### Custom Server Resource Pack
 

docs/misc/contributing/development.md

@@ -83,7 +83,7 @@ cd build/distributions
 jwebserver -b 0.0.0.0 -p 8008
 ```
 
-If `jwebserver` is not available, try `java -m jdk.httpserver`
+If `jwebserver` is not available, try `java -m jdk.httpserver -p 8008`
 
 ```shell
 --build-arg MC_HELPER_VERSION=1.8.1-SNAPSHOT \

docs/misc/deployment/index.md

@@ -1,12 +1,22 @@
 # More Deployment Info 
 
-## Using Helm
+## On Kubernetes
+
+### Using Helm
 
 - itzg Helm Chart:
     - [GitHub repo](https://github.com/itzg/minecraft-server-charts)
       - [Helm Chart repo](https://itzg.github.io/minecraft-server-charts/)
 - [mcsh/server-deployment](https://github.com/mcserverhosting-net/charts)
 
+### Using Shulker
+
+[Shulker](https://github.com/jeremylvln/Shulker) is a Kubernetes operator for managing complex and dynamic Minecraft infrastructures, including game servers and proxies. It uses the docker-minecraft-server and docker-bungeecord images under-the-hood.
+
+## On CloudFormation (AWS)
+
+If you're looking for a simple way to deploy this to the Amazon Web Services Cloud, check out the [Minecraft Server Deployment (CloudFormation) repository](https://github.com/vatertime/minecraft-spot-pricing). This repository contains a CloudFormation template that will get you up and running in AWS in a matter of minutes. Optionally it uses Spot Pricing so the server is very cheap, and you can easily turn it off when not in use.
+
 ## Supporting Articles
 
 Below are supporting articles for server deployment.
@@ -16,7 +26,3 @@ Below are supporting articles for server deployment.
     https://dev.to/rela-v/zero-to-minecraft-server-with-docker-desktop-and-compose-500a
 
     - This is a reference guide/tutorial on how to set up a vanilla Minecraft server using this project, including step-by-step instructions, and information on topics such as port-forwarding.
-
-## Deploying onto AWS
-
-If you're looking for a simple way to deploy this to the Amazon Web Services Cloud, check out the [Minecraft Server Deployment (CloudFormation) repository](https://github.com/vatertime/minecraft-spot-pricing). This repository contains a CloudFormation template that will get you up and running in AWS in a matter of minutes. Optionally it uses Spot Pricing so the server is very cheap, and you can easily turn it off when not in use.

docs/requirements.txt

@@ -1,9 +1,9 @@
 mkdocs == 1.5.3
-mkdocs-material-extensions == 1.2
-mkdocs-material == 9.4.6
+mkdocs-material-extensions == 1.3
+mkdocs-material == 9.4.8
 mkdocs-autorefs == 0.5.0
 mkdocstrings == 0.23.0
 mkdocs-literate-nav == 0.6.1
 mdx-gh-links == 0.3.1
 mkdocs-click == 0.8.1
-mkdocs-static-i18n == 1.1.1
+mkdocs-static-i18n == 1.2.0

docs/types-and-platforms/mod-platforms/auto-curseforge.md

@@ -56,13 +56,6 @@ For example:
 -e TYPE=AUTO_CURSEFORGE -e CF_SLUG=all-the-mods-8
 ```
 
-For mod, modpacks, and world files that are not allowed for automated download, the container path `/downloads` can be attached and matching files will be retrieved from there. The subdirectories `mods`, `modpacks`, and `worlds` will also be checked accordingly. To change the source location of downloaded files, set `CF_DOWNLOADS_REPO` to an existing container path. To disable this feature, set `CF_DOWNLOADS_REPO` to an empty string.
-
-!!! note "Mods need download report"
-    A file called `MODS_NEED_DOWNLOAD.txt` will be created in the `/data` directory that lists the mods that need to be manually downloaded and where to get them.
-
-If you wish to use a unpublished modpack zip, set the container path to the file in `CF_MODPACK_ZIP`. Similarly, the container path to a modpack manifest JSON can be passed to `CF_MODPACK_MANIFEST`.  In either case, **the modpack slug or page URL must still be provided**.
-
 The latest file will be located and used by default, but if a specific version is desired you can use one of the following options. With any of these options **do not select a server file** -- they lack the required manifest and defeat the ability to consistently automate startup.
 
 - Use `CF_PAGE_URL`, but include the full URL to a specific file
@@ -75,17 +68,30 @@ The following shows where to get the URL to the specific file and also shows whe
 
 The following examples all refer to version 1.0.7 of ATM8:
 
-```
--e CF_PAGE_URL=https://www.curseforge.com/minecraft/modpacks/all-the-mods-8/files/4248390
+```yaml
+  CF_PAGE_URL: https://www.curseforge.com/minecraft/modpacks/all-the-mods-8/files/4248390
 ```
 
-```
--e CF_SLUG=all-the-mods-8 -e CF_FILE_ID=4248390
+```yaml
+  CF_SLUG: all-the-mods-8
+  CF_FILE_ID: "4248390"
 ```
 
+```yaml
+  CF_SLUG: all-the-mods-8
+  CF_FILENAME_MATCHER: 1.0.7
 ```
--e CF_SLUG=all-the-mods-8 -e CF_FILENAME_MATCHER=1.0.7
-```
+
+## Manual Downloads
+
+For mod, modpacks, and world files that are not allowed for automated download, the container path `/downloads` can be attached and matching files will be retrieved from there. The subdirectories `mods`, `modpacks`, and `worlds` will also be checked accordingly. To change the source location of downloaded files, set `CF_DOWNLOADS_REPO` to an existing container path. To disable this feature, set `CF_DOWNLOADS_REPO` to an empty string.
+
+!!! note "Mods need download report"
+A file called `MODS_NEED_DOWNLOAD.txt` will be created in the `/data` directory that lists the mods that need to be manually downloaded and where to get them.
+
+## Unpublished Modpacks
+
+If you wish to use a unpublished modpack zip, set the container path to the file in `CF_MODPACK_ZIP`. Similarly, the container path to a modpack manifest JSON can be passed to `CF_MODPACK_MANIFEST`.  In either case, **the modpack slug or page URL must still be provided**.
 
 ## Exclude client mods
 
@@ -103,12 +109,44 @@ If needing to iterate on the options above, set `CF_FORCE_SYNCHRONIZE` to "true"
 !!! important
     These options are provided to empower you to get your server up and running quickly. Please help out by reporting an issue with the respective mod project. Ideally mod developers should [use correct registrations for one-sided client mods](https://docs.minecraftforge.net/en/latest/concepts/sides/#writing-one-sided-mods). Understandably, those code changes may be non-trivial, so mod authors can also add "Client" to the game versions when publishing.
 
-## Extra options
+## Excluding Overrides Files
+
+Modpack zip files typically include an `overrides` subdirectory that may contain config files, world data, and extra mod files. All of those files will be extracted into the `/data` path of the container. If any of those files, such as incompatible mods, need to be excluded from extraction, then the `CF_OVERRIDES_EXCLUSIONS` variable can be set with a comma or newline delimited list of ant-style paths ([see below](#ant-style-paths)) to exclude, relative to the overrides (or `/data`) directory. 
+
+### Ant-style paths
+
+Ant-style paths can include the following globbing/wildcard symbols:
+
+| Symbol | Behavior                                                |
+|--------|---------------------------------------------------------|
+| `*`    | Matches zero, one, or many characters except a slash    |
+| `**`   | Matches zero, one, or many characters including slashes |
+| `?`    | Matches one character                                   |
+
+!!! example
+    
+    The following compose `environment` entries show how to exclude Iris and Sodium mods from the overrides
+    
+    ```yaml
+      CF_OVERRIDES_EXCLUSIONS: mods/iris*.jar,mods/sodium*.jar
+    ```
+    
+    or using newline delimiter, which improves maintainability
+    
+    ```yaml
+      CF_OVERRIDES_EXCLUSIONS: |
+        mods/iris*.jar
+        mods/sodium*.jar
+    ```
+
+## World/Level Data
 
 Some modpacks come with world/save data via a worlds file and/or the overrides provided with the modpack. Either approach can be selected to set the `LEVEL` to the resulting saves directory by setting `CF_SET_LEVEL_FROM` to either:
 - `WORLD_FILE`
 - `OVERRIDES`
 
+## Extra options
+
 Other configuration available:
 - `CF_PARALLEL_DOWNLOADS` (default is 4): specify how many parallel mod downloads to perform
 - `CF_OVERRIDES_SKIP_EXISTING` (default is false): if set, files in the overrides that already exist in the data directory are skipped. **NOTE** world data is always skipped, if present.

docs/versions/java.md

@@ -30,8 +30,8 @@ When using the image `itzg/minecraft-server` without a tag, the `latest` image t
 | java17-openj9    | 17           | Debian | OpenJ9         | amd64             |
 | java17-graalvm   | 17           | Oracle | Oracle GraalVM | amd64,arm64       |   
 | java17-alpine    | 17           | Alpine | Hotspot        | amd64             |
-| java20-alpine    | 20           | Alpine | Hotspot        | amd64             |
-| java20           | 20           | Ubuntu | Hotspot        | amd64,arm64       |
+| java21-alpine    | 21           | Alpine | Hotspot        | amd64             |
+| java21           | 21           | Ubuntu | Hotspot        | amd64,arm64       |
 | java21-graalvm   | 21           | Oracle | Oracle GraalVM | amd64,arm64       |   
 
 For example, to use Java version 8 on any supported architecture:
@@ -55,4 +55,4 @@ The following image tags have been deprecated and are no longer receiving update
 - multiarch-latest
 - java16/java16-openj9
 - java17-graalvm-ce
-- java20-graalvm
+- java20-graalvm, java20, java20-alpine

scripts/start-deployAutoCF

@@ -15,6 +15,7 @@ set -eu
 : "${CF_FORCE_INCLUDE_MODS:=}"
 : "${CF_SET_LEVEL_FROM:=}" # --set-level-from
 : "${CF_OVERRIDES_SKIP_EXISTING:=false}" # --overrides-skip-existing
+: "${CF_OVERRIDES_EXCLUSIONS:=}" # --overrides-exclusions
 : "${CF_DOWNLOADS_REPO=$([ -d /downloads ] && echo '/downloads' || echo '')}"
 : "${CF_MODPACK_MANIFEST:=}"
 
@@ -43,6 +44,9 @@ fi
 if [[ ${CF_SET_LEVEL_FROM} ]]; then
   args+=(--set-level-from="$CF_SET_LEVEL_FROM")
 fi
+if [[ ${CF_OVERRIDES_EXCLUSIONS} ]]; then
+  args+=(--overrides-exclusions="$CF_OVERRIDES_EXCLUSIONS")
+fi
 args+=(
   --force-synchronize="$CF_FORCE_SYNCHRONIZE"
   --overrides-skip-existing="$CF_OVERRIDES_SKIP_EXISTING"

scripts/start-setupServerProperties

@@ -115,7 +115,10 @@ function customizeServerProps {
     setPropertiesArgs+=(--custom-properties "$CUSTOM_SERVER_PROPERTIES")
   fi
 
-  mc-image-helper set-properties "${setPropertiesArgs[@]}" "$SERVER_PROPERTIES"
+  if ! mc-image-helper set-properties "${setPropertiesArgs[@]}" "$SERVER_PROPERTIES"; then
+    log "ERROR: failed to update server.properties"
+    exit 1
+  fi
 
 }