bind-charmers team mailing list archive

[Barry Price <barry.price@xxxxxxxxxxxxx>]

Barry Price has proposed merging ~barryprice/charm-k8s-bind/+git/bind-k8s-image-builder:master into ~bind-charmers/charm-k8s-bind/+git/bind-k8s-image-builder:master.

Commit message:
First pass at the k8s image builder script for the Bind k8s charm project

Requested reviews:
  Bind Charmers (bind-charmers)

For more details, see:
https://code.launchpad.net/~barryprice/charm-k8s-bind/+git/bind-k8s-image-builder/+merge/387800
-- 
Your team Bind Charmers is requested to review the proposed merge of ~barryprice/charm-k8s-bind/+git/bind-k8s-image-builder:master into ~bind-charmers/charm-k8s-bind/+git/bind-k8s-image-builder:master.

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..baa4b73
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,8 @@
+*.pyc
+*.swp
+*~
+__pycache__
+files/plugins/
+files/themes/
+.coverage
+.tox/
diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..32d8813
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,30 @@
+ARG DIST_RELEASE
+
+FROM ubuntu:${DIST_RELEASE}
+
+LABEL maintainer="bind-charmers@xxxxxxxxxxxxxxxxxxx"
+
+ARG BUILD_DATE
+ARG PKGS_TO_INSTALL
+
+LABEL org.label-schema.build-date=${BUILD_DATE}
+
+ENV BIND_CONFDIR=/etc/bind
+
+# Avoid interactive prompts
+RUN echo 'debconf debconf/frontend select Noninteractive' | debconf-set-selections
+
+# Update all packages, remove cruft, install required packages, configure apache
+RUN apt-get update && apt-get -y dist-upgrade \
+    && apt-get --purge autoremove -y \
+    && apt-get install -y ${PKGS_TO_INSTALL}
+
+# entrypoint script will configure Bind based on env variables
+COPY ./files/docker-entrypoint.sh /usr/local/bin/
+RUN chmod 0755 /usr/local/bin/docker-entrypoint.sh
+
+EXPOSE 53/udp
+EXPOSE 53/tcp
+
+ENTRYPOINT ["/usr/local/bin/docker-entrypoint.sh"]
+CMD /usr/sbin/named -f -u bind
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..2d1bb40
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,24 @@
+DIST_RELEASE ?= focal
+DOCKER_DEPS = \
+	bind9
+
+build-image:
+	@echo "Building the image."
+	@docker build \
+		--no-cache=true \
+		--build-arg BUILD_DATE=$$(date -u +'%Y-%m-%dT%H:%M:%SZ') \
+		--build-arg PKGS_TO_INSTALL='$(DOCKER_DEPS)' \
+		--build-arg DIST_RELEASE=$(DIST_RELEASE) \
+		-t bind:$(DIST_RELEASE)-latest \
+		.
+
+build: deps build-image
+	@echo "Pushing to the prod-is-external registry."
+	@docker tag bind:$(DIST_RELEASE)-latest prod-is-external.docker-registry.canonical.com/bind:$(DIST_RELEASE)-latest
+	@docker push prod-is-external.docker-registry.canonical.com/bind:$(DIST_RELEASE)-latest
+
+clean:
+	@echo "Cleaning files"
+	@git clean -fXd
+
+.PHONY: build clean
diff --git a/files/docker-entrypoint.sh b/files/docker-entrypoint.sh
new file mode 100644
index 0000000..d73dc1a
--- /dev/null
+++ b/files/docker-entrypoint.sh
@@ -0,0 +1,18 @@
+#!/bin/bash
+set -eu
+
+if [ -z $CUSTOM_CONFIG_REPO ];
+then
+	echo "No custom repo set, will fall back to package default config"
+elif [ -z $BIND_CONFDIR ];
+	BIND_CONFDIR="/etc/bind"
+else
+	echo "Pulling config from $CUSTOM_CONFIG_REPO"
+	if [ -d /etc/bind ];
+	then
+		mv /etc/bind /etc/bind_$(date +"%Y-%m-%d_%H-%M-%S");
+	fi
+	git clone $CUSTOM_CONFIG_REPO $BIND_CONFDIR
+fi
+
+exec "$@"