add docker steps to a shell script

instrumentation-genai/opentelemetry-instrumentation-langchain-dev/examples/manual/build.sh

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+#!/usr/bin/env bash
+# Automated Docker image build, verify, push, and deploy script
+# Can be used standalone or called by Packer
+#
+# Usage:
+#   AUTO_PUSH=true AUTO_DEPLOY=true bash build.sh
+#
+# Environment Variables:
+#   AUTO_PUSH      - Push to Docker Hub (default: true)
+#   AUTO_DEPLOY    - Deploy to Kubernetes (default: false)
+#   K8S_MANIFEST   - Path to Kubernetes manifest file
+#   K8S_NAMESPACE  - Kubernetes namespace for deployment
+
+set -e  # Exit on error
+set -u  # Exit on undefined variable
+
+# Configuration
+DOCKER_USERNAME="${DOCKER_USERNAME:-admehra621}"
+IMAGE_NAME="${IMAGE_NAME:-lgchn-dev-py39-compat}"
+IMAGE_TAG="${IMAGE_TAG:-latest}"
+BUILD_CONTEXT="${BUILD_CONTEXT:-../../../..}"
+DOCKERFILE="instrumentation-genai/opentelemetry-instrumentation-langchain-dev/examples/manual/Dockerfile"
+PLATFORMS="${PLATFORMS:-linux/amd64,linux/arm64}"
+# Determine the platform for the local verification build; fall back to linux/amd64 if detection fails
+HOST_PLATFORM="${HOST_PLATFORM:-$(docker info --format '{{.OSType}}/{{.Architecture}}' 2>/dev/null || echo linux/amd64)}"
+TIMESTAMP=$(date +%Y%m%d-%H%M%S)
+
+FULL_IMAGE_NAME="${DOCKER_USERNAME}/${IMAGE_NAME}"
+
+# Kubernetes deployment configuration
+K8S_MANIFEST="${K8S_MANIFEST:-instrumentation-genai/opentelemetry-instrumentation-langchain-dev/examples/manual/cronjob-py39.yaml}"
+K8S_NAMESPACE="${K8S_NAMESPACE:-o11y-4-ai-admehra}"
+
+# Colors
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+NC='\033[0m' # No Color
+
+# Functions
+log_info() {
+    echo -e "${GREEN}[INFO]${NC} $1"
+}
+
+log_warn() {
+    echo -e "${YELLOW}[WARN]${NC} $1"
+}
+
+log_error() {
+    echo -e "${RED}[ERROR]${NC} $1"
+}
+
+print_header() {
+    echo "======================================================================"
+    echo "$1"
+    echo "======================================================================"
+}
+
+normalize_platform() {
+    case "$1" in
+        linux/x86_64) echo "linux/amd64" ;;
+        linux/aarch64) echo "linux/arm64" ;;
+        *) echo "$1" ;;
+    esac
+}
+
+# Main script
+main() {
+    HOST_PLATFORM="$(normalize_platform "${HOST_PLATFORM}")"
+
+    print_header "Docker Image Build Automation"
+    echo "Image: ${FULL_IMAGE_NAME}:${IMAGE_TAG}"
+    echo "Build Context: ${BUILD_CONTEXT}"
+    echo "Dockerfile: ${DOCKERFILE}"
+    echo ""
+
+    # Step 1: Build
+    log_info "Building Docker image for local verification (${HOST_PLATFORM})..."
+    cd "${BUILD_CONTEXT}" || exit 1
+
+    docker buildx build \
+        --platform "${HOST_PLATFORM}" \
+        -f "${DOCKERFILE}" \
+        -t "${FULL_IMAGE_NAME}:${IMAGE_TAG}" \
+        -t "${FULL_IMAGE_NAME}:${TIMESTAMP}" \
+        -t "${FULL_IMAGE_NAME}:py39" \
+        --load \
+        .
+
+    log_info "✓ Build completed"
+    echo ""
+
+    # Step 2: Verify
+    log_info "Verifying image..."
+
+    echo "  Image details:"
+    docker images "${FULL_IMAGE_NAME}" --format "table {{.Repository}}\t{{.Tag}}\t{{.Size}}\t{{.CreatedAt}}" | head -4
+
+    echo ""
+    echo "  Checking installed packages:"
+    docker run --rm "${FULL_IMAGE_NAME}:${IMAGE_TAG}" pip list | grep -E "opentelemetry|langchain" | head -10
+
+    echo ""
+    echo "  Testing Python imports (basic verification):"
+    docker run --rm \
+        --entrypoint /bin/bash \
+        "${FULL_IMAGE_NAME}:${IMAGE_TAG}" \
+        -c "python -c 'import sys; print(f\"Python {sys.version}\"); import opentelemetry; import langchain; print(\"✓ Core imports successful\")'"
+
+    log_info "✓ Verification completed"
+    log_info "Note: Full application testing requires OPENAI_API_KEY environment variable"
+    echo ""
+
+    # Step 3: Push (optional)
+    if [ "${AUTO_PUSH:-true}" = "true" ]; then
+        log_info "Preparing to build and push multi-architecture image (${PLATFORMS})..."
+
+        log_info "Pushing images to Docker Hub..."
+
+        # Check if logged in
+        if ! docker info 2>/dev/null | grep -q "Username:"; then
+            log_warn "Not logged into Docker Hub. Attempting login..."
+            docker login || {
+                log_error "Docker login failed. Set DOCKER_PASSWORD env var or run 'docker login'"
+                exit 1
+            }
+        fi
+
+        docker buildx build \
+            --platform "${PLATFORMS}" \
+            -f "${DOCKERFILE}" \
+            -t "${FULL_IMAGE_NAME}:${IMAGE_TAG}" \
+            -t "${FULL_IMAGE_NAME}:${TIMESTAMP}" \
+            -t "${FULL_IMAGE_NAME}:py39" \
+            --push \
+            .
+
+        log_info "✓ Push completed"
+        echo ""
+        echo "Images available at:"
+        echo "  - ${FULL_IMAGE_NAME}:${IMAGE_TAG}"
+        echo "  - ${FULL_IMAGE_NAME}:${TIMESTAMP}"
+        echo "  - ${FULL_IMAGE_NAME}:py39"
+        echo ""
+        echo "View on Docker Hub: https://hub.docker.com/r/${DOCKER_USERNAME}/${IMAGE_NAME}"
+    else
+        log_info "Skipping push (AUTO_PUSH=false)"
+    fi
+
+    # Step 4: Deploy to Kubernetes (optional)
+    if [ "${AUTO_DEPLOY:-false}" = "true" ]; then
+        log_info "Deploying to Kubernetes cluster..."
+
+        # Check if kubectl is available
+        if ! command -v kubectl &> /dev/null; then
+            log_error "kubectl not found. Please install kubectl to deploy to Kubernetes."
+            exit 1
+        fi
+
+        # Check if the manifest file exists
+        if [ ! -f "${BUILD_CONTEXT}/${K8S_MANIFEST}" ]; then
+            log_error "Kubernetes manifest not found: ${K8S_MANIFEST}"
+            exit 1
+        fi
+
+        log_info "Applying manifest: ${K8S_MANIFEST}"
+        log_info "Namespace: ${K8S_NAMESPACE}"
+
+        cd "${BUILD_CONTEXT}" || exit 1
+
+        if kubectl apply -f "${K8S_MANIFEST}" -n "${K8S_NAMESPACE}"; then
+            log_info "✓ Deployment completed successfully"
+            echo ""
+            echo "CronJob deployed to namespace: ${K8S_NAMESPACE}"
+            echo "Check status with: kubectl get cronjob -n ${K8S_NAMESPACE}"
+        else
+            log_error "Deployment failed. Check kubectl connectivity and credentials."
+            exit 1
+        fi
+        echo ""
+    else
+        log_info "Skipping Kubernetes deployment (AUTO_DEPLOY=false)"
+    fi
+
+    print_header "Build Complete!"
+}
+
+# Run main function
+main "$@"