Attempting to build multiple versions of Minecraft and Fabric API support at the same time

.gitlab-ci.yml

@@ -9,25 +9,37 @@ cache:
 stages:
   - build
 
-build_mod:
+.build_template: &build_definition
   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=$fabric_version/" gradle.properties
     - ./gradlew build
     - find build/libs -type f -name '*sources*.jar' -exec rm {} \;
     - mv build/libs/creaturechat-*.jar .
-    - export FABRIC_VERSION=$(grep 'fabric_version' gradle.properties | cut -d'=' -f2)
-    - export FABRIC_API_JAR="fabric-api-${FABRIC_VERSION}.jar"
+    - export FABRIC_API_JAR="fabric-api-${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}/${FABRIC_API_JAR}"
+    - export DOWNLOAD_URL="https://github.com/FabricMC/fabric/releases/download/${fabric_version//+/%2B}/${FABRIC_API_JAR}"
     - echo Download Fabric API from $DOWNLOAD_URL
     - wget -q -O "${FABRIC_API_JAR}" $DOWNLOAD_URL
     - ls . -la
-
   artifacts:
     paths:
       - creaturechat-*.jar
       - fabric-api-*.jar
   only:
-    - develop
+    - 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"]