diff --git a/.gitea/workflows/build-stable.yml b/.gitea/workflows/build-stable.yml
new file mode 100644
index 0000000..6234786
--- /dev/null
+++ b/.gitea/workflows/build-stable.yml
@@ -0,0 +1,30 @@
+name: nix docker build stable
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    types: [opened, reopened, synchronize]
+
+jobs:
+  amd64:
+    runs-on: [ nix-flakes, amd64-builder ]
+    steps:
+      - name: System Info
+        run: uname -m
+
+      - name: Setup
+        run: |
+          apt update -y
+          apt install -y curl gnupg
+          curl -fsSL https://deb.nodesource.com/setup_20.x | bash -
+          apt install -y nodejs
+
+      - name: Checkout
+        uses: actions/checkout@v5
+        
+      - name: Build
+        run: |
+          cd stable-with-flakes
+          nix build .#nixos-stable
+          cd ..
diff --git a/.gitea/workflows/build-unstable.yml b/.gitea/workflows/build-unstable.yml
new file mode 100644
index 0000000..4b39b94
--- /dev/null
+++ b/.gitea/workflows/build-unstable.yml
@@ -0,0 +1,30 @@
+name: nix docker build unstable
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    types: [opened, reopened, synchronize]
+
+jobs:
+  amd64:
+    runs-on: [ nix-flakes, amd64-builder ]
+    steps:
+      - name: System Info
+        run: uname -m
+
+      - name: Setup
+        run: |
+          apt update -y
+          apt install -y curl gnupg
+          curl -fsSL https://deb.nodesource.com/setup_20.x | bash -
+          apt install -y nodejs
+
+      - name: Checkout
+        uses: actions/checkout@v5
+        
+      - name: Build
+        run: |
+          cd unstable-with-flakes
+          nix build .#nixos-unstable
+          cd ..
diff --git a/stable-with-flakes/flake.lock b/stable-with-flakes/flake.lock
new file mode 100644
index 0000000..6c592f5
--- /dev/null
+++ b/stable-with-flakes/flake.lock
@@ -0,0 +1,61 @@
+{
+  "nodes": {
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1731533236,
+        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1769205177,
+        "narHash": "sha256-pN5H8TLUiUlnEHr/vbR/jTnBPrgEXYYDSrSQZkBm0EU=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "0a76d26c26ad7d63ac32ae910a5ca15003a4ec80",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "release-25.11",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/stable-with-flakes/flake.nix b/stable-with-flakes/flake.nix
new file mode 100644
index 0000000..0cc300c
--- /dev/null
+++ b/stable-with-flakes/flake.nix
@@ -0,0 +1,31 @@
+{
+  description = "Simple Nix Docker image based on a stable release";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/release-25.11";
+    flake-utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs = { self, nixpkgs, flake-utils }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let pkgs = nixpkgs.legacyPackages.${system};
+      in {
+        packages.nixos-stable = pkgs.dockerTools.buildImage {
+          name = "nixos-stable";
+          tag = "0.1.0";
+
+          config = {
+            Cmd = [
+              "${pkgs.hello}/bin/hello"
+            ];
+            Env = [
+              "NIX_CONFIG=extra-experimental-features = nix-command flakes"
+            ];
+          };
+          created = "now";
+        };
+
+        devShells.default =
+          pkgs.mkShell { buildInputs = with pkgs; [ hello ]; };
+      });
+}
diff --git a/unstable-with-flakes/flake.lock b/unstable-with-flakes/flake.lock
new file mode 100644
index 0000000..57216d5
--- /dev/null
+++ b/unstable-with-flakes/flake.lock
@@ -0,0 +1,61 @@
+{
+  "nodes": {
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1731533236,
+        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1769018530,
+        "narHash": "sha256-MJ27Cy2NtBEV5tsK+YraYr2g851f3Fl1LpNHDzDX15c=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "88d3861acdd3d2f0e361767018218e51810df8a1",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/unstable-with-flakes/flake.nix b/unstable-with-flakes/flake.nix
new file mode 100644
index 0000000..713703f
--- /dev/null
+++ b/unstable-with-flakes/flake.nix
@@ -0,0 +1,31 @@
+{
+  description = "Simple Nix Docker image based on unstable";
+
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+    flake-utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs = { self, nixpkgs, flake-utils }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let pkgs = nixpkgs.legacyPackages.${system};
+      in {
+        packages.nixos-unstable = pkgs.dockerTools.buildImage {
+          name = "nixos-unstable";
+          tag = "0.1.0";
+
+          config = {
+	            Cmd = [
+	              "${pkgs.hello}/bin/hello"
+	            ];
+	            Env = [
+	              "NIX_CONFIG=extra-experimental-features = nix-command flakes"
+	            ];
+	          };
+          created = "now";
+        };
+
+        devShells.default =
+          pkgs.mkShell { buildInputs = with pkgs; [ hello ]; };
+      });
+}