diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
new file mode 100644
index 0000000..3171526
--- /dev/null
+++ b/.gitlab-ci.yml
@@ -0,0 +1,76 @@
+stages:
+  - build
+  - release
+
+variables:
+  # Use official NixOS container
+  NIX_IMAGE: "nixos/nix:latest"
+  # Binary path relative to project root
+  BINARY_PATH: "build/compose/binaries/main/app/Theorycrafter/bin/Theorycrafter"
+  
+build:
+  stage: build
+  image: $NIX_IMAGE
+  
+  # Only run on new tags for main branch
+  only:
+    - tags
+  
+  before_script:
+    - echo "Setting up Nix environment..."
+    - nix --version
+    - nix-channel --update
+    
+  script:
+    - echo "Building Java project with Gradle via Nix shell..."
+    # Enter nix-shell and run the build
+    - nix-shell --run "./gradlew package"
+    
+    # Verify the binary exists
+    - ls -la $BINARY_PATH
+    - file $BINARY_PATH
+    
+    # Create the tarball with the tag name
+    - mkdir -p release
+    - tar -czf "release/Theorycrafter-${CI_COMMIT_TAG}-x86_64-linux.tar.gz" -C "$(dirname $BINARY_PATH)" "$(basename $BINARY_PATH)"
+    
+    # Verify the tarball was created
+    - ls -la release/
+    
+  artifacts:
+    paths:
+      - release/Theorycrafter-${CI_COMMIT_TAG}-x86_64-linux.tar.gz
+    expire_in: 1 week
+    
+  cache:
+    key: gradle-cache-$CI_COMMIT_REF_SLUG
+    paths:
+      - .gradle/caches/
+      - .gradle/wrapper/
+
+  release:
+  stage: release
+  image: registry.gitlab.com/gitlab-org/release-cli:latest
+  
+  # Only run on new tags for main branch
+  only:
+    - tags
+    
+  # Depend on build job completion
+  dependencies:
+    - build
+    
+  before_script:
+    - apk add --no-cache curl jq
+    
+  script:
+    - echo "Creating GitLab release for tag ${CI_COMMIT_TAG}..."
+    
+    # Create release using GitLab Release CLI
+    - |
+      release-cli create \
+        --name "Theorycrafter ${CI_COMMIT_TAG}" \
+        --tag-name "${CI_COMMIT_TAG}" \
+        --description "Release ${CI_COMMIT_TAG}" \
+        --assets-link "{\"name\":\"Theorycrafter-${CI_COMMIT_TAG}-x86_64-linux.tar.gz\",\"url\":\"${CI_PROJECT_URL}/-/jobs/${CI_JOB_ID}/artifacts/file/release/Theorycrafter-${CI_COMMIT_TAG}-x86_64-linux.tar.gz\"}"
+
diff --git a/nvim b/nvim
new file mode 100644
index 0000000..a2d7778
--- /dev/null
+++ b/nvim
@@ -0,0 +1,28 @@
+{ pkgs ? import <nixpkgs> {} }:
+
+pkgs.mkShell {
+  buildInputs = with pkgs; [
+    openjdk17
+    gradle
+    git
+    mesa
+    libglvnd
+  ];
+
+  shellHook = ''
+    echo "Java development environment loaded!"
+    echo "- OpenJDK 17: $(java -version 2>&1 | head -n1)"
+    echo "- Gradle: $(gradle --version | grep 'Gradle' | head -n1 2>/dev/null || echo 'Gradle available')"
+    echo "- OpenGL libraries available"
+
+    export LD_LIBRARY_PATH=${pkgs.mesa.out}/lib:${pkgs.libglvnd.out}/lib:$LD_LIBRARY_PATH
+    export JAVA_HOME=${pkgs.openjdk17}
+
+    echo ""
+    echo "Environment variables set:"
+    echo "- JAVA_HOME: $JAVA_HOME"
+    echo "- LD_LIBRARY_PATH: $LD_LIBRARY_PATH"
+    echo ""
+    echo "Ready to build! Run: ./gradlew package"
+  '';
+}
diff --git a/shell.nix b/shell.nix
new file mode 100644
index 0000000..a2d7778
--- /dev/null
+++ b/shell.nix
@@ -0,0 +1,28 @@
+{ pkgs ? import <nixpkgs> {} }:
+
+pkgs.mkShell {
+  buildInputs = with pkgs; [
+    openjdk17
+    gradle
+    git
+    mesa
+    libglvnd
+  ];
+
+  shellHook = ''
+    echo "Java development environment loaded!"
+    echo "- OpenJDK 17: $(java -version 2>&1 | head -n1)"
+    echo "- Gradle: $(gradle --version | grep 'Gradle' | head -n1 2>/dev/null || echo 'Gradle available')"
+    echo "- OpenGL libraries available"
+
+    export LD_LIBRARY_PATH=${pkgs.mesa.out}/lib:${pkgs.libglvnd.out}/lib:$LD_LIBRARY_PATH
+    export JAVA_HOME=${pkgs.openjdk17}
+
+    echo ""
+    echo "Environment variables set:"
+    echo "- JAVA_HOME: $JAVA_HOME"
+    echo "- LD_LIBRARY_PATH: $LD_LIBRARY_PATH"
+    echo ""
+    echo "Ready to build! Run: ./gradlew package"
+  '';
+}