# k3s cluster image with Navigator Helm charts and manifests
#
# This image is based on k3s and includes:
# - Packaged Navigator Helm chart
# - HelmChart CR for auto-deploying Navigator
# - Custom entrypoint for DNS configuration in Docker environments
#
# Component images (navigator/server, navigator/sandbox) are
# pulled at runtime from the distribution registry rather than bundled as tarballs.
# Registry credentials are generated by the entrypoint script at container start.
#
# The helm charts are built by the docker:build:cluster mise task
# and placed in deploy/docker/.build/ before this Dockerfile is built.

ARG K3S_VERSION=v1.29.8-k3s1
FROM rancher/k3s:${K3S_VERSION}

# Create directories for manifests and configuration
RUN mkdir -p /var/lib/rancher/k3s/server/manifests \
             /var/lib/rancher/k3s/server/static/charts \
             /etc/rancher/k3s \
             /opt/navigator/manifests

# Copy entrypoint script that configures DNS for Docker environments
# This script detects the host gateway IP and configures CoreDNS to use it
COPY deploy/docker/cluster-entrypoint.sh /usr/local/bin/cluster-entrypoint.sh
RUN chmod +x /usr/local/bin/cluster-entrypoint.sh

# Copy healthcheck script that verifies cluster readiness
COPY deploy/docker/cluster-healthcheck.sh /usr/local/bin/cluster-healthcheck.sh
RUN chmod +x /usr/local/bin/cluster-healthcheck.sh

# Registry credentials for pulling component images at runtime are generated
# by the entrypoint script at /etc/rancher/k3s/registries.yaml.

# Copy packaged helm chart to static directory for serving via k3s API
COPY deploy/docker/.build/charts/*.tgz /var/lib/rancher/k3s/server/static/charts/

# Copy Kubernetes manifests to a persistent location that won't be overwritten by the volume mount.
# The bootstrap code will copy these to /var/lib/rancher/k3s/server/manifests/ after cluster start.
COPY deploy/kube/manifests/*.yaml /opt/navigator/manifests/

# Use custom entrypoint that configures DNS before starting k3s
ENTRYPOINT ["/usr/local/bin/cluster-entrypoint.sh"]

HEALTHCHECK --interval=5s --timeout=5s --start-period=20s --retries=60 \
  CMD ["/usr/local/bin/cluster-healthcheck.sh"]