modrinth: support excluding mods from modpack (#2524)

docs/misc/contributing/development.md

@@ -65,32 +65,38 @@ VERSION=1.12.2 /scripts/start-magma
 
 > NOTE: You may want to temporarily add an `exit` statement near the end of your script to isolate execution to just the script you're developing.
 
-## Using development copy of mc-image-helper
+## Using development copy of tools
 
-In the cloned copy of [`mc-image-helper`](https://github.com/itzg/mc-image-helper), create an up-to-date snapshot build of the tgz distribution using:
+In the cloned repo, such as [`mc-image-helper`](https://github.com/itzg/mc-image-helper), create an up-to-date snapshot build of the tgz distribution using:
 
 ```shell
 ./gradlew distTar
 ```
 
 !!! note
+
     The distribution's version will be `0.0.0-<branch>-SNAPSHOT`
 
-Assuming Java 18 or newer:
+For Go base tools, run
 
 ```shell
-cd build/distributions
-jwebserver -b 0.0.0.0 -p 8008
+goreleaser release --snapshot --clean
 ```
 
-If `jwebserver` is not available, try `java -m jdk.httpserver -p 8008`
+Clone [itzg/github-releases-proxy](https://github.com/itzg/github-releases-proxy) and run it according to the instructions shown there.
+
+In the Docker build, configure the following 
 
 ```shell
---build-arg MC_HELPER_VERSION=1.8.1-SNAPSHOT \
---build-arg MC_HELPER_BASE_URL=http://host.docker.internal:8008
+--build-arg GITHUB_BASEURL=http://host.docker.internal:8080 \
+--build-arg APPS_REV=1
 ```
 
-Now the image can be built like normal, and it will install mc-image-helper from the locally built copy.
+and declare one or more version overrides, such as
+
+```
+--build-arg MC_HELPER_VERSION=1.8.1-SNAPSHOT
+```
 
 ## Generating release notes
 

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

@@ -8,7 +8,7 @@ To manage a CurseForge modpack automatically with upgrade support, pinned or lat
 
     A CurseForge API key is **required** to use this feature. Go to their [developer console](https://console.curseforge.com/), generate an API key, and set the environment variable `CF_API_KEY`.
     
-    When entering your API Key in a docker compose file you will need to escape any `$` character with a second `$`.
+    When entering your API Key in a docker compose file you will need to escape any `$` character with a second `$`. Refer to [this compose file reference section](https://docs.docker.com/compose/compose-file/compose-file-v3/#variable-substitution) for more information.
     
     Example if your key is `$11$22$33aaaaaaaaaaaaaaaaaaaaaaaaaa`:
     ```yaml

docs/types-and-platforms/mod-platforms/modrinth-modpacks.md

@@ -41,3 +41,16 @@ Some mods, such as [MCInstance Loader](https://modrinth.com/mod/mcinstance-loade
           config/mcinstanceloader/pack.mcinstance
     ```
 
+## Excluding files
+
+To exclude client mods that are incorrectly declared by the modpack as server-compatible, set `MODRINTH_EXCLUDE_FILES` to a comma or newline delimited list of partial file names to exclude. You may need to set `MODRINTH_FORCE_SYNCHRONIZE` to "true" while iterating on a compatible set of mods to use.
+
+!!! example
+
+    In a Compose file:
+    ```yaml
+      MODRINTH_EXCLUDE_FILES: |
+        notenoughanimations
+        lambdynamiclights
+        euphoriapatcher
+    ```