Cache tool binaries in CI

Author: swiatekm

.github/workflows/continuous-integration.yaml

@@ -23,6 +23,12 @@ jobs:
       with:
         go-version: "~1.21.1"
 
+    - name: Cache tools
+      uses: actions/cache@v4
+      with:
+        path: bin
+        key: ${{ runner.os }}-${{ runner.arch }}-${{ hashFiles('Makefile') }}
+
     - name: "basic checks"
       run: make ci
 
@@ -38,6 +44,12 @@ jobs:
       with:
         go-version: "~1.21.1"
 
+    - name: Cache tools
+      uses: actions/cache@v4
+      with:
+        path: bin
+        key: ${{ runner.os }}-${{ runner.arch }}-${{ hashFiles('Makefile') }}
+
     - uses: actions/cache@v4
       with:
         path: |

.github/workflows/e2e.yaml

@@ -47,6 +47,12 @@ jobs:
       with:
         go-version: "~1.21.3"
 
+    - name: Cache tools
+      uses: actions/cache@v4
+      with:
+        path: bin
+        key: ${{ runner.os }}-${{ runner.arch }}-${{ hashFiles('Makefile') }}
+
     - name: "run tests"
       env:
         KUBE_VERSION: ${{ matrix.kube-version }}