Change appveyor.yml

It seems the before_build bash script was not executed.

Author: ThomasBarnekow

appveyor.yml

@@ -4,7 +4,7 @@ image:
 
 version: '{build}'
 
-stack: postgresql 13.4
+stack: postgresql 13.4, docker
 
 environment:
   PGUSER: postgres
@@ -38,17 +38,6 @@ for:
   - docker
   # REF: https://github.com/docascode/docfx-seed/blob/master/appveyor.yml
   before_build:
-    - pwsh: |
-        if (-Not $env:APPVEYOR_PULL_REQUEST_TITLE) {
-            # https://dotnet.github.io/docfx/tutorial/docfx_getting_started.html
-            git checkout $env:APPVEYOR_REPO_BRANCH -q
-        }
-        # Pinning to previous version, because zip of v2.58.8 (released 2d ago) is corrupt.
-        # Tracked at https://github.com/dotnet/docfx/issues/7689
-        choco install docfx -y --version 2.58.5
-        if ($lastexitcode -ne 0) {
-            throw "docfx install failed with exit code $lastexitcode."
-        }
     - sh: |
         # Pull Azure Cosmos Emulator Docker image
         echo "Pulling Azure Cosmos Emulator Docker image for Linux ..."
@@ -77,6 +66,17 @@ for:
         if ($isWindows) {
             .\start-cosmos-db-emulator.ps1
         }
+    - pwsh: |
+        if (-Not $env:APPVEYOR_PULL_REQUEST_TITLE) {
+            # https://dotnet.github.io/docfx/tutorial/docfx_getting_started.html
+            git checkout $env:APPVEYOR_REPO_BRANCH -q
+        }
+        # Pinning to previous version, because zip of v2.58.8 (released 2d ago) is corrupt.
+        # Tracked at https://github.com/dotnet/docfx/issues/7689
+        choco install docfx -y --version 2.58.5
+        if ($lastexitcode -ne 0) {
+            throw "docfx install failed with exit code $lastexitcode."
+        }
   after_build:
     - pwsh: |
         CD ./docs