diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 29ddb819e..941d3d6ca 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -19,12 +19,10 @@ stages:
 node dependencies:
   stage: frontend:build
   script:
-    - nix -L build -o node-dependencies .#uniworxNodeDependencies
-    - nix-store --export $(nix-store -qR node-dependencies) > node-dependencies.nar
-  before_script: &nix
-    - install -m 0644 .gitlab-ci/nix-bootstrap.conf /etc/nix/nix.conf
-    - nix-env -f '<nixpkgs>' -riA envsubst
-    - envsubst -i .gitlab-ci/nix.conf -o /etc/nix/nix.conf
+    - nix -L build -o result .#uniworxNodeDependencies
+    - nix-store --export $(nix-store -qR result) > node-dependencies.nar
+  before_script: &nix-before
+    - install -m 0644 .gitlab-ci/nix.conf /etc/nix/nix.conf
     - git config --global init.defaultBranch master
     - install -v -m 0700 -d ~/.ssh
     - install -v -T -m 0644 "${SSH_KNOWN_HOSTS}" ~/.ssh/known_hosts
@@ -42,9 +40,9 @@ well known:
   stage: frontend:build
   script:
     - nix-store --import <node-dependencies.nar
-    - nix -L build -o well-known .#uniworxWellKnown
-    - nix-store --export $(nix-store -qR well-known) > well-known.nar
-  before_script: *nix
+    - nix -L build -o result .#uniworxWellKnown
+    - nix-store --export $(nix-store -qR result) > well-known.nar
+  before_script: *nix-before
   needs:
     - job: node dependencies
       artifacts: true
@@ -61,9 +59,9 @@ frontend:
   script:
     - nix-store --import <node-dependencies.nar
     - nix-store --import <well-known.nar
-    - nix -L build -o frontend .#uniworxFrontend
-    - nix-store --export $(nix-store -qR frontend) > frontend.nar
-  before_script: *nix
+    - nix -L build -o result .#uniworxFrontend
+    - nix-store --export $(nix-store -qR result) > frontend.nar
+  before_script: *nix-before
   needs:
     - job: node dependencies
       artifacts: true
@@ -81,9 +79,9 @@ backend:
   stage: backend:build
   script:
     - nix-store --import <frontend.nar
-    - nix -L build -o backend .#uniworxBackend
-    - cp -pr --reflink=auto result/bin .
-  before_script: *nix
+    - nix -L build -o result .#uniworxBackend
+    - cp -pr --reflink=auto -L result/bin .
+  before_script: *nix-before
   needs:
     - job: frontend
       artifacts: true
@@ -99,9 +97,9 @@ demo docker:
   stage: docker:build
   script:
     - nix-store --import <backend.nar
-    - nix -L build -o backend .#uniworxDemoDocker
+    - nix -L build -o result .#uniworxDemoDocker
     - cp -pr --reflink=auto -L result uniworx-demo.tar.gz
-  before_script: *nix
+  before_script: *nix-before
   needs:
     - job: backend
       artifacts: true
@@ -117,9 +115,9 @@ docker:
   stage: docker:build
   script:
     - nix-store --import <backend.nar
-    - nix -L build -o backend .#uniworxDocker
+    - nix -L build -o result .#uniworxDocker
     - cp -pr --reflink=auto -L result uniworx.tar.gz
-  before_script: *nix
+  before_script: *nix-before
   needs:
     - job: backend
       artifacts: true
diff --git a/.gitlab-ci/nix-bootstrap.conf b/.gitlab-ci/nix-bootstrap.conf
deleted file mode 100644
index b35f18d99..000000000
--- a/.gitlab-ci/nix-bootstrap.conf
+++ /dev/null
@@ -1,4 +0,0 @@
-sandbox = true
-substituters = https://hydra.iohk.io https://cache.nixos.org/
-trusted-public-keys = hydra.iohk.io:f/Ea+s+dFdN+3Y/G+FDgSq+a5NEWhJGzdjvKNGv0/EQ= cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY=
-require-sigs = true
\ No newline at end of file