Dockerfile.helm

# Optional Custom Dockerfile for Helm + kubectl
# FOR: Users who prefer a single custom container image
# USAGE: docker build -f Dockerfile.helm -t ltgm-helm .
# NOTE: The default scripts use public images (alpine/helm, bitnami/kubectl)

FROM alpine:3.19

# Labels
LABEL maintainer="LGTM Stack"
LABEL description="Lightweight container with Helm and kubectl for LGTM stack deployment"
LABEL version="1.0"

# Install dependencies
RUN apk add --no-cache \
    curl \
    ca-certificates \
    bash \
    git \
    openssl

# Install kubectl
ENV KUBECTL_VERSION=v1.28.4
RUN curl -LO "https://dl.k8s.io/release/${KUBECTL_VERSION}/bin/linux/amd64/kubectl" && \
    chmod +x kubectl && \
    mv kubectl /usr/local/bin/kubectl

# Install Helm
ENV HELM_VERSION=v3.13.2
RUN curl -fsSL -o get_helm.sh https://raw.githubusercontent.com/helm/helm/main/scripts/get-helm-3 && \
    chmod 700 get_helm.sh && \
    ./get_helm.sh --version ${HELM_VERSION} && \
    rm get_helm.sh

# Create non-root user for security
RUN addgroup -g 1001 ltgm && \
    adduser -D -u 1001 -G ltgm ltgm

# Set working directory
WORKDIR /workspace

# Switch to non-root user
USER ltgm

# Default command
CMD ["helm", "--help"]

# Build instructions:
# docker build -f Dockerfile.helm -t ltgm-helm:latest .
#
# Usage in helm-container.sh:
# Replace HELM_IMAGE="alpine/helm:3.13.2" with HELM_IMAGE="ltgm-helm:latest"
# Remove the separate kubectl container usage