Switch to haskell images in the CI

.gitea/workflows/build.yml

@@ -13,7 +13,7 @@ jobs:
         run: |
           apt-get update -y
           apt-get upgrade -y
-          apt-get install -y nodejs pkg-config liblzma-dev
+          apt-get install -y nodejs pkg-config
       - uses: actions/checkout@v4
       - name: Install dependencies
         run: |
@@ -28,29 +28,23 @@ jobs:
         run: |
           apt-get update -y
           apt-get upgrade -y
-          apt-get install -y nodejs pkg-config liblzma-dev
+          apt-get install -y nodejs pkg-config
       - uses: actions/checkout@v4
       - name: Install dependencies
-        run: |
-          cabal update
-          cabal build graphql-test
+        run: cabal update
+      - name: Prepare system
+        run: cabal build graphql-test
       - run: cabal test --test-show-details=streaming
 
   doc:
-    runs-on: alpine
+    runs-on: haskell
     steps:
       - name: Set up environment
-        shell: ash {0}
         run: |
-          apk add --no-cache git bash curl build-base readline-dev openssl-dev zlib-dev libpq-dev gmp-dev
-      - name: Prepare system
-        run: |
-          curl --create-dirs --output-dir \
-            ~/.ghcup/bin https://downloads.haskell.org/~ghcup/0.1.19.5/x86_64-linux-ghcup-0.1.19.5 -o ghcup
-          chmod +x ~/.ghcup/bin/ghcup
-          ~/.ghcup/bin/ghcup install ghc 9.4.8
-          ~/.ghcup/bin/ghcup install cabal 3.6.2.0
+          apt-get update -y
+          apt-get upgrade -y
+          apt-get install -y nodejs pkg-config
       - uses: actions/checkout@v4
       - name: Install dependencies
-        run: ~/.ghcup/bin/ghcup run --ghc 9.4.8 --cabal 3.6.2.0 -- cabal update
-      - run: ~/.ghcup/bin/ghcup run --ghc 9.4.8 --cabal 3.6.2.0 -- cabal haddock --enable-documentation
+        run: cabal update
+      - run: cabal haddock --enable-documentation