diff --git a/.github/workflows/validate_pr.yml b/.github/workflows/validate_pr.yml
index 606267e9..6c3736a4 100644
--- a/.github/workflows/validate_pr.yml
+++ b/.github/workflows/validate_pr.yml
@@ -9,23 +9,17 @@ concurrency:
   cancel-in-progress: true
 
 jobs:
-  docker:
+  integration-tests:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
         uses: actions/checkout@v2
 
-      - name: Git LFS pull
-        run: git lfs pull
-
       - name: Install protobuf
         run: sudo apt-get install protobuf-compiler
 
-      - name: Generate certs
-        run: ./playground/generate_certs.sh
-
-      - name: Run Docker Compose
-        run: docker-compose up --abort-on-container-exit
+      - name: Run system
+        run: ./playground/run.sh --create-certs
   formatting:
     name: Rustfmt
     runs-on: ubuntu-latest
diff --git a/fixtures/sha256/circom.r1cs b/fixtures/sha256/circom.r1cs
deleted file mode 100644
index 2f00120a..00000000
Binary files a/fixtures/sha256/circom.r1cs and /dev/null differ
diff --git a/fixtures/sha256/circom.wasm b/fixtures/sha256/circom.wasm
deleted file mode 100644
index d0ccce8e..00000000
Binary files a/fixtures/sha256/circom.wasm and /dev/null differ
diff --git a/fixtures/sha256/input.json b/fixtures/sha256/input.json
deleted file mode 100644
index 756b0338..00000000
--- a/fixtures/sha256/input.json
+++ /dev/null
@@ -1,4 +0,0 @@
-{
-  "a": 1,
-  "b": 2
-}
diff --git a/fixtures/sha256/public_inputs.json b/fixtures/sha256/public_inputs.json
deleted file mode 100644
index 09e64f00..00000000
--- a/fixtures/sha256/public_inputs.json
+++ /dev/null
@@ -1,3 +0,0 @@
-[
-  "72587776472194017031617589674261467945970986113287823188107011979"
-]