updated docker file

.dockerignore

@@ -1 +1,6 @@
 **
+!src
+!Cargo.toml
+!Cargo.lock
+!flake.nix
+!flake.lock

.github/workflows/docker.yml

@@ -0,0 +1,23 @@
+name: Docker
+
+on:
+    push:
+        branches: ["main", "feature/docker"]
+    pull_request:
+        branches: ["main"]
+
+env:
+    CARGO_TERM_COLOR: always
+
+jobs:
+    build:
+        runs-on: ubuntu-latest
+
+        steps:
+            - uses: actions/checkout@v4
+            - uses: hustcer/setup-nu@v3
+
+            - name: Get Cargo version
+              run: version=$(nu -c "cargo metadata --format-version=1 --no-deps | from json | get packages | first | get version")
+            - name: Build docker image
+              run: docker build -t docki:$version .

Dockerfile

@@ -1,7 +1,11 @@
-FROM rust:slim
+FROM nixos/nix AS build
 
-WORKDIR /opt/rust
+WORKDIR /app
+
+COPY . /app
+
+RUN nix --extra-experimental-features nix-command --extra-experimental-features flakes build \
+	&& nix --extra-experimental-features nix-command --extra-experimental-features flakes store gc
+
+RUN mkdir /out && cp result/bin/docki .
 
-RUN apt update \
-    && apt-get -y upgrade \
-    && apt-get -y install libssl-dev pkg-config