Container Image Download from Helmchart example for Synthetic Pop

Download the Helmchart 

https://artifacthub.io/packages/helm/instana/synthetic-pop

Script to populate Helm chart with values and Download Container Images create tar file 

#!/bin/bash

set -e

CHART_NAME="synthetic-pop"

CHART_REPO="https://agents.instana.io/helm"

CHART_DIR="./temp-chart"

IMAGE_LIST="image-list.txt"

RENDERED="rendered.yaml"

IMAGE_SAVE_DIR="./saved-images"

ARCHIVE_NAME="instana-images.tar.gz"

# Clean up

rm -rf "$CHART_DIR" "$IMAGE_LIST" "$RENDERED" "$IMAGE_SAVE_DIR" "$ARCHIVE_NAME"

mkdir -p "$IMAGE_SAVE_DIR"

# Pull and unpack chart

helm pull "$CHART_NAME" --repo "$CHART_REPO" --untar --untardir "$CHART_DIR"

# Render Helm chart with real values (replace placeholder values below!)

helm template synthetic-pop "$CHART_DIR/$CHART_NAME" \

  --set downloadKey="qUMhYJxjSv6uZh2SyqTEnw" \

  --set controller.location="MyLoc;Display;DE;Berlin;0;0;Demo" \

  --set controller.clusterName="demo-cluster" \

  --set controller.instanaKey="W7UItbxeQwKKTvxgawX33w" \

  --set controller.instanaSyntheticEndpoint="https://instanak3s.lab.allwaysbeginner.com/synthetics" \

  --set redis.tls.enabled=false \

  --set redis.password="mypassword" \

  > "$RENDERED"

# Extract all unique image references

grep -Eo 'image:\s*["'"'"']?[a-zA-Z0-9./:_@\-]+["'"'"']?' "$RENDERED" | \

  sed -E 's/image:\s*["'"'"']?([^"'"'"']+)["'"'"']?/\1/' | \

  sort -u > "$IMAGE_LIST"

echo "✅ Found images:"

cat "$IMAGE_LIST"

# Pull and save images

echo "⬇️ Pulling and saving images..."

while read -r image; do

  echo "➡️ Pulling $image"

  docker pull "$image"

  safe_name=$(echo "$image" | tr '/:@' '_')

  echo "💾 Saving $image as $safe_name.tar"

  docker save "$image" -o "$IMAGE_SAVE_DIR/$safe_name.tar"

done < "$IMAGE_LIST"

# Create compressed archive

echo "📦 Creating archive: $ARCHIVE_NAME"

tar -czf "$ARCHIVE_NAME" -C "$IMAGE_SAVE_DIR" .

echo "✅ Done. All images saved and archived in $ARCHIVE_NAME"

--------------------

ctr Download

docker login cp.stg.icr.io/cp --username=cp --password=${IBM_ENTITLEMENT_KEY}

ctr image pull \

  --user cp:${IBM_ENTITLEMENT_KEY} \

  cp.icr.io/cp/pliant/infra-mysql-master:v8.0.41011