Add jsonnet image

Author: taylorific

.github/workflows/ci.yml

@@ -60,6 +60,7 @@ jobs:
             hadolint: 'hadolint/**'
             hashicorp/terraform: 'hashicorp/terraform/**'
             jfrog/jfrog-cli: 'jfrog/jfrog-cli/**'
+            jsonnet: 'jsonnet/**'
             ldap-utils: 'ldap-utils/**'
             markdownlint: 'markdownlint/**'
             meshcmd: 'meshcmd/**'

jsonnet/.dockerignore

@@ -0,0 +1,2 @@
+README.md
+test/

jsonnet/Containerfile

@@ -0,0 +1,52 @@
+# syntax=docker/dockerfile:1
+# Arguments used in FROM need to be defined before the first build stage
+ARG BUILD_IMAGE=docker.io/polymathrobotics/golang:1.24-noble
+ARG BASE_IMAGE=docker.io/ubuntu:noble-20250529
+# hadolint ignore=DL3006
+FROM $BASE_IMAGE AS base
+
+ARG JSONNET_URL_AMD64
+ARG JSONNET_SHA256_AMD64
+ARG JSONNET_URL_ARM64
+ARG JSONNET_SHA256_ARM64
+
+FROM base AS download
+SHELL ["/bin/bash", "-o", "pipefail", "-c"]
+RUN <<EOF
+  apt-get update
+  apt-get install -y --no-install-recommends \
+    ca-certificates \
+    curl
+  mkdir -p /tmp/jsonnet
+  dpkgArch="$(dpkg --print-architecture)"
+  case "${dpkgArch##*-}" in \
+    amd64) \
+      JSONNET_URL="${JSONNET_URL_AMD64}" \
+      JSONNET_SHA256="${JSONNET_SHA256_AMD64}" \
+      ;; \
+    arm64) \
+      JSONNET_URL="${JSONNET_URL_ARM64}" \
+      JSONNET_SHA256="${JSONNET_SHA256_ARM64}" \
+      ;; \
+    *) echo "unsupported architecture"; exit 1 ;; \
+  esac
+  curl -fsSL -o /tmp/jsonnet.tar.gz "${JSONNET_URL}"
+  echo "${JSONNET_SHA256} /tmp/jsonnet.tar.gz" | sha256sum -c -
+  tar xvf /tmp/jsonnet.tar.gz -C /tmp/jsonnet
+EOF
+
+FROM ${BUILD_IMAGE} AS build
+
+RUN <<EOF
+  go install github.com/monitoring-mixins/mixtool/cmd/mixtool@main
+EOF
+
+FROM base
+
+COPY --chmod=755 --from=download /tmp/jsonnet/jsonnet /usr/local/bin/jsonnet
+COPY --chmod=755 --from=download /tmp/jsonnet/jsonnetfmt /usr/local/bin/jsonnetfmt
+COPY --chmod=755 --from=download /tmp/jsonnet/jsonnet-lint /usr/local/bin/jsonnet-lint
+COPY --chmod=755 --from=download /tmp/jsonnet/jsonnet-deps /usr/local/bin/jsonnet-deps
+COPY --chmod=755 --from=build /go/bin/mixtool /usr/local/bin/mixtool
+
+USER ubuntu

jsonnet/README.md

@@ -0,0 +1,19 @@
+# jsonnet
+
+Jsonnet tools.
+
+Jsonnet is a superset of JSON with added features like:
+- Variables
+- Functions
+- Conditionals
+- Imports
+- Object composition
+- Macros
+
+## Included Tools
+
+`jsonnet` - Jsonnet CLI interpreter
+`jsonnetfmt` - Formatter for Jsonnet files
+`jsonnet-lint` - Syntax and style checker for Jsonnet code.
+`jsonnet-deps` - Produces a dependency graph of Jsonnet file imports
+`mixtool` - Renders Prometheus monitoring mixins

jsonnet/docker-bake.hcl

@@ -0,0 +1,43 @@
+variable "TAG_PREFIX" {
+  default = "docker.io/polymathrobotics/jsonnet"
+}
+
+variable "VERSION" {
+  default = "0.21.0"
+}
+
+# There's no darwin-based Docker, so if we're running on macOS, change the platform to linux
+variable "LOCAL_PLATFORM" {
+  default = regex_replace("${BAKE_LOCAL_PLATFORM}", "^(darwin)", "linux")
+}
+
+target "_common" {
+  dockerfile = "Containerfile"
+  args = {
+    JSONNET_URL_AMD64 = "https://github.com/google/go-jsonnet/releases/download/v0.21.0/go-jsonnet_Linux_x86_64.tar.gz"
+    JSONNET_SHA256_AMD64 = "ad3181fde77726b02d17eb4e72687020bf2cb35b9336cdeaaca4783c7ff104f7"
+    JSONNET_URL_ARM64 = "https://github.com/google/go-jsonnet/releases/download/v0.21.0/go-jsonnet_Linux_arm64.tar.gz"
+    JSONNET_SHA256_ARM64 = "4a263da605dbe2edb99529f495266211062fac476789f2119408bc223338f1d6"
+  }
+  tags = [
+    "${TAG_PREFIX}:${VERSION}",
+    "${TAG_PREFIX}:latest",
+  ]
+  labels = {
+    "org.opencontainers.image.source" = "https://github.com/polymathrobotics/oci"
+    "org.opencontainers.image.licenses" = "Apache-2.0"
+    "org.opencontainers.image.description" = "Jsonnet utilities for Prometheus."
+    "org.opencontainers.image.title" = "${TAG_PREFIX}"
+    "org.opencontainers.image.created" = "${timestamp()}"
+  }
+}
+
+target "local" {
+  inherits = ["_common"]
+  platforms = ["${LOCAL_PLATFORM}"]
+}
+
+target "default" {
+  inherits = ["_common"]
+  platforms = ["linux/amd64", "linux/arm64/v8"]
+} 

jsonnet/test/controls/jsonnet.rb

@@ -0,0 +1,11 @@
+%w(
+  jsonnet
+  jsonnet-deps
+  jsonnet-lint
+  jsonnetfmt
+  mixtool
+).each do |binary|
+  describe command(binary) do
+    it { should exist }
+  end
+end