diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index e025953..c1724e2 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -21,11 +21,10 @@ jobs:
       - uses: szenius/set-timezone@v1.0
         with:
           timezoneLinux: "Europe/Prague"
-      - run: make
-      - run: find dist
       - run: "deno run --allow-run utils/tag.js >> $GITHUB_ENV"
-      - run: "echo \"${{ env.TAG }}\" >> ./dist/TAG"
-      - run: "echo \"Builded Tag: ${{ env.TAG }}\""
+      - run: "echo \"Tag: ${{ env.TAG }}\""
+      - run: "make tag=${{ env.TAG }}"
+      - run: find dist
       - uses: montudor/action-zip@v1
       - run: "zip -qq -r release.zip dist"
       - uses: actions/upload-artifact@v3
diff --git a/.gitignore b/.gitignore
index 19b1931..f0e9622 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,4 @@ dist
 dist-mirror
 cache
 .env
+.vscode
\ No newline at end of file
diff --git a/Makefile b/Makefile
index f56bc94..82a17f1 100644
--- a/Makefile
+++ b/Makefile
@@ -16,7 +16,7 @@ format:
 fmt: format
 
 build:
-	deno run --unstable --allow-read --allow-write utils/exec.js build
+	deno run --unstable --allow-read --allow-write utils/build.js tag=$(tag)
 
 build-mirror:
 	deno run --unstable --allow-read --allow-write utils/mirror.js
diff --git a/utils/build.js b/utils/build.js
new file mode 100644
index 0000000..25b7a5b
--- /dev/null
+++ b/utils/build.js
@@ -0,0 +1,19 @@
+import { DeConfEngine } from "./engine.js";
+
+const args = Deno.args || [];
+const options = Object.fromEntries(
+  args.map((x) => {
+    const [key, value] = x.split("=");
+    if (!value) return null;
+    return [key, value];
+  }).filter((x) => x),
+);
+
+const deconf = new DeConfEngine();
+console.log(options)
+await deconf.init(options);
+
+const output = await deconf.build();
+if (output) {
+  console.log(output);
+}
diff --git a/utils/engine.js b/utils/engine.js
index dfdbee5..5312ca6 100644
--- a/utils/engine.js
+++ b/utils/engine.js
@@ -16,6 +16,7 @@ let _silentMode = false;
 export class DeConfEngine {
   constructor(options = {}) {
     this.options = options;
+    this.tag = this.options.tag || "dev";
     this.srcDir = this.options.srcDir || "./data";
     this.outputDir = this.options.outputDir || "./dist";
     this.publicUrl = this.options.publicUrl || "https://data.prgblockweek.com";
@@ -39,6 +40,8 @@ export class DeConfEngine {
   }
   async build() {
     await emptyDir(this.outputDir);
+    console.log(this.tag)
+    await _textWrite([this.outputDir, "TAG"], this.tag);
     for (const pkg of this.entries) {
       console.table(pkg.data.events.map((e) => e.data.index), ["name"]);
       await pkg.write(this.outputDir);
@@ -103,6 +106,7 @@ class DeConf_Package {
     this.id = id;
     this.data = null;
     this.engine = engine;
+    this.tag = engine.tag;
     this.colMapper = {
       places: "place",
       events: "event",
@@ -170,7 +174,8 @@ class DeConf_Package {
           return [col, this.data[col]];
         }),
       ),
-      time: new Date(),
+      __time: new Date(),
+      __tag: this.tag,
     });
   }
 }
@@ -338,6 +343,12 @@ async function _jsonWrite(fn, data) {
   }
   return true;
 }
+async function _textWrite(fn, text) {
+  if (Array.isArray(fn)) {
+    fn = fn.join("/");
+  }
+  await Deno.writeTextFile(fn, text);
+}
 async function _jsonLoad(fn) {
   return JSON.parse(await Deno.readTextFile(fn));
 }
diff --git a/utils/exec.js b/utils/exec.js
index 26c8fdb..4f3b6bd 100644
--- a/utils/exec.js
+++ b/utils/exec.js
@@ -6,6 +6,14 @@ await deconf.init();
 let cmd = Deno.args[0] || "build";
 let args = Deno.args.slice(1) || [];
 
+const options = Object.fromEntries(
+  args.map((x) => {
+    const [key, value] = x.split("=");
+    if (!value) return null;
+    return [key, value];
+  }).filter((x) => x),
+);
+
 const output = await deconf[cmd](...args);
 if (output) {
   console.log(output);