diff --git a/.forgejo/workflows/buildAndTest.yml b/.forgejo/workflows/buildAndTest.yml
index 9b3403db..c10b4439 100644
--- a/.forgejo/workflows/buildAndTest.yml
+++ b/.forgejo/workflows/buildAndTest.yml
@@ -37,23 +37,17 @@ jobs:
 
   build:
 
-    runs-on: docker
+    runs-on: debian-latest
 
     steps:
-    - name: Clone yavsc
-      run: |
-        cd /src
-        git clone https://forgejo.pschneider.fr/notazof/yavsc.git _src
-        cd _src
-        if [ -n "${GITHUB_REF:-}" ]; then
-          git fetch origin "$GITHUB_REF"
-          git checkout FETCH_HEAD
-        fi
-        git submodule update --init --recursive
-        echo "Checked out at $(git rev-parse HEAD) on $(git branch --show-current 2>/dev/null || echo detached HEAD)"
+    - uses: actions/checkout@v6
+    - name: Setup .NET
+      uses: actions/setup-dotnet@v5
+      with:
+        dotnet-version: 10.0.x
     - name: Restore dependencies
-      run: cd /src/_src && dotnet restore
+      run: dotnet restore
     - name: Build
-      run: cd /src/_src && dotnet build --no-restore
+      run: dotnet build --no-restore
     - name: Test
-      run: cd /src/_src && dotnet test --no-build --verbosity normal
+      run: dotnet test --no-build --verbosity normal
diff --git a/.gitmodules b/.gitmodules
deleted file mode 100644
index eadf3c7f..00000000
--- a/.gitmodules
+++ /dev/null
@@ -1,3 +0,0 @@
-[submodule "external/dotnet-android-build-image"]
-	path = external/dotnet-android-build-image
-	url = https://forgejo.pschneider.fr/notazof/dotnet-android-build-image.git
diff --git a/NuGet.config b/NuGet.config
deleted file mode 100644
index c601d09b..00000000
--- a/NuGet.config
+++ /dev/null
@@ -1,23 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-  Project-level NuGet configuration.
-
-  The yavsc solution depends on HigginsSoft.IdentityServer8.* 8.1.0-alpha.*,
-  published only on the internal feed https://isn.pschneider.fr. The public
-  nuget.org feed has 8.0.4 as the nearest version, which causes NU1102 on
-  restore for every project that depends on it (Yavsc.Org, Yavsc.Api,
-  Yavsc.Blogs, Yavsc.Server, cli, tests).
-
-  Listing 'isn' before 'nuget.org' here ensures that restore finds the
-  alpha packages first, then falls back to nuget.org for everything else.
-  Both feeds are reachable anonymously; no credentials are stored here.
-
-  See AGENTS.md for the rationale.
--->
-<configuration>
-  <packageSources>
-    <clear />
-    <add key="isn" value="https://isn.pschneider.fr/api/v3/index.json" />
-    <add key="nuget.org" value="https://api.nuget.org/v3/index.json" />
-  </packageSources>
-</configuration>
diff --git a/external/dotnet-android-build-image b/external/dotnet-android-build-image
deleted file mode 160000
index 0695a6c1..00000000
--- a/external/dotnet-android-build-image
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 0695a6c1fea6508f1a88f7ad0ad9cb93733aa52d