add trivy image scan actions

Signed-off-by: Ashutosh Kumar <[email protected]>

Author: sonasingh46

.github/workflows/scan.yml

@@ -0,0 +1,22 @@
+name: scan-images
+
+on:
+  schedule:
+    - cron: "0 12 * * 1"
+
+# Remove all permissions from GITHUB_TOKEN except metadata.
+permissions: {}
+
+jobs:
+  scan:
+    name: Trivy
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out code
+        uses: actions/checkout@93ea575cb5d8a053eaa0ac8fa3b40d7e05a33cc8 # tag=v3.1.0
+      - name: Setup go
+        uses: actions/setup-go@d0a58c1c4d2b25278816e339b944508c875f3613 # tag=v3.4.0
+        with:
+          go-version: 1.19
+      - name: Run verify container script
+        run: make verify-container-images

Makefile

@@ -213,9 +213,13 @@ clean-temporary: ## Remove all temporary files and folders.
 	rm -f *.kubeconfig
 
 .PHONY: clean-release
-clean-release: ## Remove the release folder.
+clean-release: clean-release-git ## Remove the release folder.
 	rm -rf $(RELEASE_DIR)
 
+.PHONY: clean-release-git
+clean-release-git: ## Restores the git files usually modified during a release
+	git restore ./*manager_image_patch.yaml ./*manager_pull_policy.yaml
+
 APIDIFF_OLD_COMMIT ?= $(shell git rev-parse origin/main)
 
 .PHONY: apidiff
@@ -704,6 +708,14 @@ ifneq ($(WIN_REPO_URL), )
 endif
 	$(MAKE) test-conformance CONFORMANCE_E2E_ARGS="-kubetest.config-file=$(KUBETEST_WINDOWS_CONF_PATH) -kubetest.repo-list-path=$(KUBETEST_REPO_LIST_PATH) $(E2E_ARGS)"
 
+## --------------------------------------
+## Security Scanning
+## --------------------------------------
+
+.PHONY: verify-container-images
+verify-container-images: ## Verify container images
+	./hack/verify-container-images.sh
+
 ## --------------------------------------
 ## Tilt / Kind
 ## --------------------------------------

hack/verify-container-images.sh

@@ -0,0 +1,73 @@
+#!/bin/bash
+
+# Copyright 2023 The Kubernetes Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+if [[ "${TRACE-0}" == "1" ]]; then
+    set -o xtrace
+fi
+
+TRIVY_VERSION=0.34.0
+
+GO_OS="$(go env GOOS)"
+if [[ "${GO_OS}" == "linux" ]]; then
+  TRIVY_OS="Linux"
+elif [[ "${GO_OS}" == "darwin"* ]]; then
+  TRIVY_OS="macOS"
+fi
+
+GO_ARCH="$(go env GOARCH)"
+if [[ "${GO_ARCH}" == "amd" ]]; then
+  TRIVY_ARCH="32bit"
+elif [[ "${GO_ARCH}" == "amd64"* ]]; then
+  TRIVY_ARCH="64bit"
+elif [[ "${GO_ARCH}" == "arm" ]]; then
+  TRIVY_ARCH="ARM"
+elif [[ "${GO_ARCH}" == "arm64" ]]; then
+  TRIVY_ARCH="ARM64"
+fi
+
+TOOL_BIN=hack/tools/bin
+mkdir -p ${TOOL_BIN}
+
+# Downloads trivy scanner
+curl -L -o ${TOOL_BIN}/trivy.tar.gz "https://github.com/aquasecurity/trivy/releases/download/v${TRIVY_VERSION}/trivy_${TRIVY_VERSION}_${TRIVY_OS}-${TRIVY_ARCH}.tar.gz"
+
+tar -xf "${TOOL_BIN}/trivy.tar.gz" -C "${TOOL_BIN}" trivy
+chmod +x ${TOOL_BIN}/trivy
+rm ${TOOL_BIN}/trivy.tar.gz
+
+# Builds all the container images to be scanned and cleans up changes to ./*manager_image_patch.yaml ./*manager_pull_policy.yaml.
+make REGISTRY=gcr.io/k8s-staging-cluster-api-azure PULL_POLICY=IfNotPresent TAG=dev docker-build
+make clean-release-git
+
+# Scan the images
+${TOOL_BIN}/trivy image -q --exit-code 1 --ignore-unfixed --severity MEDIUM,HIGH,CRITICAL gcr.io/k8s-staging-cluster-api-azure/cluster-api-azure-controller-"${GO_ARCH}":dev && R1=$? || R1=$?
+
+echo ""
+BRed='\033[1;31m'
+BGreen='\033[1;32m'
+NC='\033[0m' # No
+
+if [ "$R1" -ne "0" ]
+then
+  echo -e "${BRed}Check container images failed! There are vulnerability to be fixed${NC}"
+  exit 1
+fi
+
+echo -e "${BGreen}Check container images passed! No vulnerability found${NC}"