Add GitHub actions

.github/workflows/build.yml

@@ -0,0 +1,33 @@
+---
+name: "Build & publish artifacts"
+on:
+  push
+
+
+jobs:
+  publish_binaries:
+    name: Build & publish artifacts
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout the repo
+        uses: actions/checkout@v4
+
+      - name: Install nix
+        uses: cachix/install-nix-action@v12
+        with:
+          nix_path: nixpkgs=channel:nixos-unstable
+      - run: nix --extra-experimental-features nix-command --extra-experimental-features flakes build '.#static'
+
+      - name: Upload syslog-client
+        uses: actions/upload-artifact@v4
+        with:
+          name: syslog-client
+          path: result/bin/syslog-client
+          if-no-files-found: error
+
+      - name: Upload syslog-server
+        uses: actions/upload-artifact@v4
+        with:
+          name: syslog-server
+          path: result/bin/syslog-server
+          if-no-files-found: error

.github/workflows/docker.yml

@@ -0,0 +1,38 @@
+---
+name: "Build & publish docker image"
+on:
+  push:
+    tags:
+      - 'v*'
+
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
+
+jobs:
+  publish_docker_image:
+    name: Build & publish docker image to the GitHub container registry
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout the repo
+        uses: actions/checkout@v4
+
+      - name: Install nix
+        uses: cachix/install-nix-action@v12
+        with:
+          nix_path: nixpkgs=channel:nixos-unstable
+
+      - name: Login to the container registry
+        uses: docker/login-action@65b78e6e13532edd9afa3aa52ac7964289d1a9c1
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - run: nix --extra-experimental-features nix-command --extra-experimental-features flakes build '.#docker'
+      - run: docker load <result
+      - run: docker tag syslog-utils:latest ghcr.io/${IMAGE_NAME}:latest
+      - run: docker tag syslog-utils:latest ghcr.io/${IMAGE_NAME}:${{ github.ref_name }}
+      - run: docker push ghcr.io/${IMAGE_NAME}:latest

.github/workflows/release.yml

@@ -0,0 +1,29 @@
+---
+name: "Build & publish release binaries"
+on:
+  push:
+    tags:
+      - 'v*'
+
+
+jobs:
+  publish_binaries:
+    name: Build & publish release binaries
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout the repo
+        uses: actions/checkout@v4
+
+      - name: Install nix
+        uses: cachix/install-nix-action@v12
+        with:
+          nix_path: nixpkgs=channel:nixos-unstable
+      - run: nix --extra-experimental-features nix-command --extra-experimental-features flakes build '.#static'
+
+      - name: Release
+        uses: softprops/action-gh-release@v2
+        with:
+          files: |
+            result/bin/syslog-client
+            result/bin/syslog-server
+