docker: add kubectl to the toolkit

Dockerfile

@@ -70,6 +70,14 @@ RUN mkdir /tmp/terraform_env/ && \
     cp  terraform /usr/local/bin/ && \
     rm terraform_${TERRAFORM_VERSION}_linux_amd64.zip
 
+# Install Kubectl
+ARG KUBECTL_VERSION=1.29.2
+RUN mkdir /tmp/kubectl_env/ && \
+    cd /tmp/kubectl_env/ && \
+    curl -LO "https://dl.k8s.io/release/v$KUBECTL_VERSION/bin/linux/amd64/kubectl" && \
+    chmod +x kubectl && \
+    mv ./kubectl /usr/local/bin/kubectl
+
 # Cleanup
 RUN apt-get clean && \
     rm -rf /var/lib/apt/lists/*

docs/TROUBLESHOOTING.md

@@ -1 +1,6 @@
 - https://stackoverflow.com/questions/62154016/docker-on-wsl2-very-slow
+
+- exec /usr/local/bin/kubectl: exec format error
+See: https://stackoverflow.com/questions/73398714/docker-fails-when-building-on-m1-macs-exec-usr-local-bin-docker-entrypoint-sh
+
+- Check architecure: dpkg --print-architecture

scripts/check_version_in_toolkit.sh

@@ -7,6 +7,7 @@ declare -A tools=(
   [python3]="3.11.3"
   [ansible]="2.16.4"
   [terraform]="1.7.4"
+  [kubectl]="1.29.2"
   # Add more tools as needed
 )
 
@@ -15,11 +16,26 @@ check_tool_version() {
   local tool_name=$1
   local expected_version=$2
   echo "[$tool_name] Checking version..."
-  # Get the installed version
-  installed_version=$(docker run --rm $image_name $tool_name --version)
-  echo "$installed_version"
+
+  # Possible version option flags for different tools
+  local version_flags=(
+    "--version"
+    "version"
+  )
+
+  installed_version=""
+
+  # Iterate through possible version flags
+  for flag in "${version_flags[@]}"; do
+    installed_version=$(docker run --rm "$image_name" "$tool_name" "$flag" 2>&1)
+    # Check if the version information is in the output
+    if echo "$installed_version" | grep -q "$expected_version"; then
+      break
+    fi
+  done
+
   # Compare the installed version with the expected version
-  if [[ "$installed_version" == *"$expected_version"* ]]; then
+  if echo "$installed_version" | grep -q "$expected_version"; then
     echo "[OK] $tool_name version is correct: $installed_version"
   else
     echo "[Error] Incorrect $tool_name version. Expected $expected_version but found $installed_version"