alpine-docker#64 - add trivy scan in pipeine

latest_versions.sh

@@ -0,0 +1,33 @@
+image="alpine/k8s"
+
+# jq 1.6
+DEBIAN_FRONTEND=noninteractive
+#sudo apt-get update && sudo apt-get -q -y install jq
+curl -sL https://github.com/stedolan/jq/releases/download/jq-1.6/jq-linux64 -o jq
+mv jq /usr/bin/jq
+chmod +x /usr/bin/jq
+
+# Get the list of all releases tags, excludes alpha, beta, rc tags
+releases=$(curl -s https://api.github.com/repos/kubernetes/kubernetes/releases | jq -r '.[].tag_name | select(test("alpha|beta|rc") | not)')
+
+# Loop through the releases and extract the minor version number
+for release in $releases; do
+  minor_version=$(echo $release | awk -F'.' '{print $1"."$2}')
+
+  # Check if the minor version is already in the array of minor versions
+  if [[ ! " ${minor_versions[@]} " =~ " ${minor_version} " ]]; then
+    minor_versions+=($minor_version)
+  fi
+done
+
+# Sort the unique minor versions in reverse order
+sorted_minor_versions=($(echo "${minor_versions[@]}" | tr ' ' '\n' | sort -rV))
+
+# Loop through the first 4 unique minor versions and get the latest version for each
+for i in $(seq 0 3); do
+  minor_version="${sorted_minor_versions[$i]}"
+  latest_version=$(echo "$releases" | grep "^$minor_version\." | sort -rV | head -1 | sed 's/v//')
+  latest_versions+=($latest_version)
+done
+
+echo "${latest_versions[*]}"