Adapt workflows for running from this repo

.github/workflows/build-and-test.yml

@@ -10,9 +10,16 @@ jobs:
   build-and-test:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - name: Checkout mod repo
+      uses: actions/checkout@v2
       with:
         fetch-depth: 0
+    - name: Checkout workflows repo
+      uses: actions/checkout@v3
+      with:
+        repository: GTNewHorizons/GTNH-Actions-Workflows
+        path: .gtnh-workflows
+        fetch-depth: 0
 
     - name: Set up JDK 8
       uses: actions/setup-java@v2
@@ -38,5 +45,5 @@ jobs:
 
     - name: Test no errors reported during server run
       run: |
-        chmod +x .github/scripts/test_no_error_reports
+        chmod +x .gtnh-workflows/scripts/test_no_error_reports
-        .github/scripts/test_no_error_reports
+        .gtnh-workflows/scripts/test_no_error_reports

.github/workflows/release-tags.yml

@@ -5,14 +5,20 @@ name: Release tagged build
 
 on:
   workflow_call:
+    secrets:
+      MAVEN_USER:
+        required: false
+      MAVEN_PASSWORD:
+        required: false
 
 jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - name: Checkout mod repo
+        uses: actions/checkout@v2
         with:
-          fetch-depth: 0
+          fetch-depth: 32
 
       - name: Set release version
         run: echo "RELEASE_VERSION=${GITHUB_REF#refs/*/}" >> $GITHUB_ENV
@@ -47,3 +53,4 @@ jobs:
         env:
           MAVEN_USER: ${{ secrets.MAVEN_USER }}
           MAVEN_PASSWORD: ${{ secrets.MAVEN_PASSWORD }}
+        if: ${{ env.MAVEN_USER != '' }}