diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 18f106a..f357c99 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -3,8 +3,9 @@ stages:
     - package
     - release
 
-.backend_base:
+build_backend_glibc:
     stage: build
+    image: reg.gitlab.mattv.de/root/docker-images/ubuntu_build_base:latest
     script:
         - SRC="$PWD"
         - TMP=$(mktemp -d)
@@ -16,25 +17,35 @@ stages:
         - VCPKG_DEFAULT_BINARY_CACHE=$SRC/vcpkg_cache cmake -B build -S backend -DCMAKE_TOOLCHAIN_FILE=$TMP/scripts/buildsystems/vcpkg.cmake -DCMAKE_BUILD_TYPE=Release
         - cmake --build build
         - cp build/backend server
-    artifacts:
-        paths:
-            - server
-
-build_backend_glibc:
-    extends: .backend_base
-    image: reg.gitlab.mattv.de/root/docker-images/ubuntu_build_base:latest
     cache:
         key: backend_glibc
         paths:
             - vcpkg_cache
+    artifacts:
+        paths:
+            - server
 
 build_backend_muslc:
-    extends: .backend_base
+    stage: build
     image: reg.gitlab.mattv.de/root/docker-images/alpine_build_base:latest
+    script:
+        - SRC="$PWD"
+        - TMP=$(mktemp -d)
+        - cd $TMP
+        - git clone https://github.com/Microsoft/vcpkg.git .
+        - ./bootstrap-vcpkg.sh -disableMetrics
+        - cd $SRC
+        - mkdir -p vcpkg_cache
+        - VCPKG_FORCE_SYSTEM_BINARIES=1 VCPKG_DEFAULT_BINARY_CACHE=$SRC/vcpkg_cache cmake -B build -S backend -DCMAKE_TOOLCHAIN_FILE=$TMP/scripts/buildsystems/vcpkg.cmake -DCMAKE_BUILD_TYPE=Release
+        - cmake --build build
+        - cp build/backend server
     cache:
         key: backend_muslc
         paths:
             - vcpkg_cache
+    artifacts:
+        paths:
+            - server
 
 test_and_build_frontend:
     image: node:latest