Trying another approach, looping in script

.gitlab-ci.yml

@@ -9,23 +9,34 @@ cache:
 stages:
   - build
 
-.build_template: &build_definition
+build_mod:
   stage: build
   script:
-    - echo "Building for Minecraft Version $minecraft_version with Fabric $fabric_version"
-    - sed -i "s/minecraft_version=.*/minecraft_version=$minecraft_version/" gradle.properties
-    - sed -i "s/yarn_mappings=.*/yarn_mappings=$yarn_mappings/" gradle.properties
-    - sed -i "s/loader_version=.*/loader_version=$loader_version/" gradle.properties
-    - sed -i "s/fabric_version=.*/fabric_version=$fabric_version/" gradle.properties
-    - ./gradlew build
-    - find build/libs -type f -name '*sources*.jar' -exec rm {} \;
-    - mv build/libs/creaturechat-*.jar .
-    - export FABRIC_API_JAR="fabric-api-${fabric_version}.jar"
-    - echo Detected Fabric API version from gradle.properties $FABRIC_API_JAR
-    - export DOWNLOAD_URL="https://github.com/FabricMC/fabric/releases/download/${fabric_version//+/%2B}/${FABRIC_API_JAR}"
-    - echo Download Fabric API from $DOWNLOAD_URL
-    - wget -q -O "${FABRIC_API_JAR}" $DOWNLOAD_URL
-    - ls . -la
+    - |
+      declare -a versions=("1.20" "1.20.1" "1.20.2" "1.20.3" "1.20.4" "1.20.5" "1.20.6")
+      declare -a mappings=("1.20+build.1" "1.20.1+build.10" "1.20.2+build.4" "1.20.3+build.1" "1.20.4+build.3" "1.20.5+build.1" "1.20.6+build.1")
+      declare -a fabric_versions=("0.83.0+1.20" "0.92.1+1.20.1" "0.91.6+1.20.2" "0.91.1+1.20.3" "0.97.0+1.20.4" "0.97.8+1.20.5" "0.97.8+1.20.6")
+
+      for i in "${!versions[@]}"; do
+        minecraft_version="${versions[$i]}"
+        yarn_mappings="${mappings[$i]}"
+        fabric_version="${fabric_versions[$i]}"
+
+        echo "Building for Minecraft Version $minecraft_version with Fabric $fabric_version"
+        sed -i "s/minecraft_version=.*/minecraft_version=$minecraft_version/" gradle.properties
+        sed -i "s/yarn_mappings=.*/yarn_mappings=$yarn_mappings/" gradle.properties
+        sed -i "s/loader_version=.*/loader_version=0.15.11/" gradle.properties
+        sed -i "s/fabric_version=.*/fabric_version=$fabric_version/" gradle.properties
+
+        ./gradlew build
+        find build/libs -type f -name '*sources*.jar' -exec rm {} \;
+        mv build/libs/creaturechat-*.jar .
+
+        FABRIC_API_JAR="fabric-api-${fabric_version}.jar"
+        DOWNLOAD_URL="https://github.com/FabricMC/fabric/releases/download/${fabric_version//+/%2B}/${FABRIC_API_JAR}"
+        wget -q -O "${FABRIC_API_JAR}" $DOWNLOAD_URL
+        ls . -la
+      done
   artifacts:
     paths:
       - creaturechat-*.jar
@@ -34,12 +45,3 @@ stages:
     - multi-version-build-pipeline
   tags:
     - minecraft
-
-build_mod:
-  extends: .build_template
-  parallel:
-    matrix:
-      - minecraft_version: ["1.20", "1.20.1", "1.20.2", "1.20.3", "1.20.4", "1.20.5", "1.20.6"]
-        yarn_mappings: ["1.20+build.1", "1.20.1+build.10", "1.20.2+build.4", "1.20.3+build.1", "1.20.4+build.3", "1.20.5+build.1", "1.20.6+build.1"]
-        loader_version: ["0.15.11", "0.15.11", "0.15.11", "0.15.11", "0.15.11", "0.15.11", "0.15.11"]
-        fabric_version: ["0.83.0+1.20", "0.92.1+1.20.1", "0.91.6+1.20.2", "0.91.1+1.20.3", "0.97.0+1.20.4", "0.97.8+1.20.5", "0.97.8+1.20.6"]