.github: create separate workflow to build CLI/image

There's too much jobs in Tests workflow, so we can split them into several parts.

.github/workflows/build.yml

@@ -0,0 +1,80 @@
+name: Build
+
+on:
+  pull_request:
+    branches:
+      - master
+    types: [opened, synchronize]
+    paths-ignore:
+      - 'scripts/**'
+      - '**/*.md'
+  workflow_dispatch:
+
+env:
+  GO111MODULE: "on"
+
+jobs:
+  build_cli_ubuntu:
+    name: Build CLI (Ubuntu)
+    runs-on: ubuntu-20.04
+
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+
+      - name: Set up Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: 1.17
+
+      - name: Restore Go modules from cache
+        uses: actions/cache@v2
+        with:
+          path: /home/runner/go/pkg/mod
+          key: deps-${{ hashFiles('go.sum') }}
+
+      - name: Update Go modules
+        run: go mod download -json
+
+      - name: Build CLI
+        run: make build
+
+  build_cli_win:
+    name: Build CLI (Windows)
+    runs-on: windows-2019
+
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+
+      - name: Set up Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: 1.17
+
+      - name: Restore Go modules from cache
+        uses: actions/cache@v2
+        with:
+          path: /home/runner/go/pkg/mod
+          key: deps-${{ hashFiles('go.sum') }}
+
+      - name: Update Go modules
+        run: go mod download -json
+
+      - name: Build CLI
+        run: make build
+
+  build_image:
+    needs: build_cli_ubuntu
+    name: Build Docker image
+    runs-on: ubuntu-20.04
+
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+
+      - name: Build Docker image
+        run: make image

.github/workflows/run_tests.yml

@@ -128,68 +128,3 @@ jobs:
 
       - name: Run tests
         run: go test -v -race ./...
-
-  build_cli_ubuntu:
-    name: Build CLI (Ubuntu)
-    runs-on: ubuntu-20.04
-
-    steps:
-      - uses: actions/checkout@v2
-        with:
-          fetch-depth: 0
-
-      - name: Set up Go
-        uses: actions/setup-go@v2
-        with:
-          go-version: 1.17
-
-      - name: Restore Go modules from cache
-        uses: actions/cache@v2
-        with:
-          path: /home/runner/go/pkg/mod
-          key: deps-${{ hashFiles('go.sum') }}
-
-      - name: Update Go modules
-        run: go mod download -json
-
-      - name: Build CLI
-        run: make build
-
-  build_cli_win:
-    name: Build CLI (Windows)
-    runs-on: windows-2019
-
-    steps:
-      - uses: actions/checkout@v2
-        with:
-          fetch-depth: 0
-
-      - name: Set up Go
-        uses: actions/setup-go@v2
-        with:
-          go-version: 1.17
-
-      - name: Restore Go modules from cache
-        uses: actions/cache@v2
-        with:
-          path: /home/runner/go/pkg/mod
-          key: deps-${{ hashFiles('go.sum') }}
-
-      - name: Update Go modules
-        run: go mod download -json
-
-      - name: Build CLI
-        run: make build
-
-  build_image:
-    needs: build_cli_ubuntu
-    name: Build Docker image
-    runs-on: ubuntu-20.04
-
-    steps:
-      - uses: actions/checkout@v2
-        with:
-          fetch-depth: 0
-
-      - name: Build Docker image
-        run: make image