chore: Simplifies CI workflow

.github/workflows/master.yml

@@ -0,0 +1,73 @@
+# SPDX-License-Identifier: Apache-2.0
+# Copyright 2023 Canonical Ltd.
+
+name: Master workflow
+
+on:
+  pull_request:
+    branches:
+      - master
+  push:
+    branches:
+      - master
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-go@v5
+        with:
+          go-version: 1.21
+
+      - name: Build
+        run: go build
+
+  docker-build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-go@v5
+        with:
+          go-version: 1.21
+
+      - name: Build and push Docker image
+        run: make docker-build
+
+  lint:
+    name: lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-go@v5
+        with:
+          go-version: 1.21
+
+      - name: golangci-lint
+        uses: golangci/golangci-lint-action@v3.7.0
+        with:
+          version: latest
+          args: -v --config ./.golangci.yml
+
+  license-check:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: reuse lint
+        run: make check-reuse
+
+  unit-tests:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-go@v5
+        with:
+          go-version: 1.21
+
+      - name: Unit tests
+        run: go test ./...