ci(pr): build cryostat3 for preview

.github/ISSUE_TEMPLATE/config.yml

@@ -1,5 +1,5 @@
 blank_issues_enabled: enabled
 contact_links:
   - name: Cryostat Community Support
-    url: https://github.com/cryostatio/cryostat/discussions
+    url: https://github.com/cryostatio/cryostat3/discussions
     about: Ask general questions about Cryostat here!

.github/workflows/pr-ci.yml

@@ -71,7 +71,7 @@ jobs:
     steps:
     - uses: actions/checkout@v2
       with:
-        repository: cryostatio/cryostat
+        repository: cryostatio/cryostat3
     - id: query-pom
       name: Get properties from POM
       run: |
@@ -82,7 +82,7 @@ jobs:
     outputs:
       core-version: ${{ steps.query-pom.outputs.core-version }}
       image-version: ${{ steps.query-pom.outputs.image-version }}
-  
+
   build-deps:
     runs-on: ubuntu-latest
     needs: [get-pom-properties]
@@ -101,7 +101,7 @@ jobs:
       with:
         name: cryostat-core
         path: /home/runner/.m2/repository/io/cryostat/cryostat-core/
-  
+
   build-image-and-push:
     runs-on: ubuntu-latest
     permissions:
@@ -114,7 +114,7 @@ jobs:
     steps:
     - uses: actions/checkout@v3
       with:
-        repository: cryostatio/cryostat
+        repository: cryostatio/cryostat3
         submodules: true
         fetch-depth: 0
     - uses: actions/setup-java@v3
@@ -126,11 +126,14 @@ jobs:
       with:
         name: cryostat-core
         path: /home/runner/.m2/repository/io/cryostat/cryostat-core/
-    - run: git submodule init
-    - run: git submodule update --remote
-    - run: cd web-client && git fetch origin pull/${{ env.PR_num }}/head:pr-${{ env.PR_num }} && git checkout pr-${{ env.PR_num }}
-    - run: cd ..
-    - run: mvn -B -U -Dmaven.test.skip=true clean package
+    - run: |
+        git submodule init
+        git submodule update --remote
+        pushd src/main/webui
+        git fetch origin pull/${{ env.PR_num }}/head:pr-${{ env.PR_num }}
+        git checkout pr-${{ env.PR_num }}
+        popd
+        mvn -B -U -Dmaven.test.skip=true clean package
     - name: Tag cryostat image
       run: podman tag cryostat ghcr.io/${{ github.repository_owner }}/cryostat-web:pr-${{ env.PR_num }}-${{ env.head_sha }}
     - name: Push PR test image to ghcr.io