add a CronJob

- remove the caching, it's more trouble than it's worth
- use '&&' instead of ';', so it fails earlier

Gemfile.lock

@@ -13,7 +13,7 @@ GEM
       mini_mime (>= 1.0.0)
       multi_xml (>= 0.5.2)
     json (2.12.2)
-    jwt (3.1.1)
+    jwt (3.1.2)
       base64
     ksuid (1.0.0)
     language_server-protocol (3.17.0.5)
@@ -102,7 +102,7 @@ GEM
       rack-protection (= 4.1.1)
       sinatra (= 4.1.1)
       tilt (~> 2.0)
-    sorbet-runtime (0.5.12204)
+    sorbet-runtime (0.5.12210)
     standard (1.50.0)
       language_server-protocol (~> 3.17.0.2)
       lint_roller (~> 1.0)

app.rb

@@ -12,6 +12,8 @@ require "securerandom"
 require "random/formatter"
 require "ulid"
 require "anyflake"
+require "cuid2"
+require "ksuid"
 
 require "jwt"
 
@@ -362,6 +364,24 @@ get "/snowflake" do
   end
 end
 
+get "/cuid2" do
+  n = params.fetch(:n, 1).to_i
+  stream do |out|
+    n.times do |_|
+      out << format("%s\n", Cuid2.generate)
+    end
+  end
+end
+
+get "/ksuid" do
+  n = params.fetch(:n, 1).to_i
+  stream do |out|
+    n.times do |_|
+      out << format("%s\n", KSUID.new)
+    end
+  end
+end
+
 post "/quit" do
   Process.kill("TERM", ppid)
   nil

docker-bake.hcl

@@ -9,6 +9,10 @@ target "_common" {
     args = {
         RUBY_VERSION = "3.4.4"
     }
+    platforms = [
+        "linux/amd64",
+        "linux/arm64",
+    ]
 }
 
 target "bookworm" {

dockerfiles/alpine.Dockerfile

@@ -1,5 +1,6 @@
 ARG RUBY_VERSION="3.4.4"
 ARG BASE_REGISTRY="docker.io"
+
 FROM ${BASE_REGISTRY}/ruby:${RUBY_VERSION}-alpine AS base
 
 ENV RACK_ENV="production" \
@@ -11,28 +12,21 @@ ENV RACK_ENV="production" \
 WORKDIR /kubernaut
 
 RUN \
-  --mount=type=cache,id=var-cache-apk,target=/var/cache/apk,sharing=locked \
+  apk update -q && \
-  apk update -q; \
   apk add bash jemalloc
 
-RUN \
-  --mount=type=cache,id=usr-local-bundle-cache,target=${BUNDLE_PATH},sharing=locked \
-  gem update --system --no-document; \
-  gem install -N bundler
-
 FROM base AS build
 
 RUN \
-  --mount=type=cache,id=var-cache-apk,target=/var/cache/apk,sharing=locked \
+  apk update -q && \
-  apk update -q; \
+  apk add musl-dev gcc make && \
-  apk add musl-dev gcc make; \
   apk add bash jemalloc
 
 COPY Gemfile Gemfile.lock ./
 
 RUN \
-  --mount=type=cache,id=usr-local-bundle-ruby-cache,target=${BUNDLE_PATH}/ruby/3.4.0/cache,sharing=locked \
+  bundle install && \
-  bundle install
+  rm -rf ~/.bundle/ "${BUNDLE_PATH}"/ruby/*/cache "${BUNDLE_PATH}"/ruby/*/bundler/gems/*/.git
 
 COPY . .
 
@@ -41,7 +35,7 @@ FROM base
 ENV PORT=4567
 
 RUN \
-  addgroup --system --gid 666 kubernaut; \
+  addgroup --system --gid 666 kubernaut && \
   adduser --system --uid 666 --ingroup kubernaut --shell /bin/bash --disabled-password kubernaut
 
 COPY --from=build "${BUNDLE_PATH}" "${BUNDLE_PATH}"

dockerfiles/bookworm.Dockerfile

@@ -1,6 +1,7 @@
 ARG RUBY_VERSION="3.4.4"
 ARG BASE_REGISTRY="docker.io"
 ARG DEBIAN_VERSION="bookworm"
+
 FROM ${BASE_REGISTRY}/ruby:${RUBY_VERSION}-slim-${DEBIAN_VERSION} AS base
 
 ENV RACK_ENV="production" \
@@ -11,36 +12,23 @@ ENV RACK_ENV="production" \
 
 WORKDIR /kubernaut
 
-RUN rm -f /etc/apt/apt.conf.d/docker-clean
-
 RUN \
-  --mount=type=cache,id=var-cache-apt,target=/var/cache/apt,sharing=locked \
+  apt-get update -qq && \
-  --mount=type=cache,id=var-lib-apt,target=/var/lib/apt,sharing=locked \
+  apt-get install --yes --no-install-recommends libjemalloc2 && \
-  apt-get update -qq; \
+  rm -rf /var/lib/apt/lists /var/cache/apt/archives
-  apt-get install --yes --no-install-recommends \
-  libjemalloc2
-
-RUN \
-  --mount=type=cache,id=usr-local-bundle-cache,target=${BUNDLE_PATH},sharing=locked \
-  gem update --system --no-document; \
-  gem install -N bundler
-
-ENV DEBIAN_FRONTEND="noninteractive"
 
 FROM base AS build
 
 RUN \
-  --mount=type=cache,id=var-cache-apt,target=/var/cache/apt,sharing=locked \
+  apt-get update -qq && \
-  --mount=type=cache,id=var-lib-apt,target=/var/lib/apt,sharing=locked \
+  apt-get install --yes --no-install-recommends build-essential && \
-  apt-get update -qq; \
+  rm -rf /var/lib/apt/lists /var/cache/apt/archives
-  apt-get install --yes --no-install-recommends \
-  build-essential
 
 COPY Gemfile Gemfile.lock ./
 
 RUN \
-  --mount=type=cache,id=usr-local-bundle-ruby-cache,target=${BUNDLE_PATH}/ruby/3.4.0/cache,sharing=locked \
+  bundle install && \
-  bundle install
+  rm -rf ~/.bundle/ "${BUNDLE_PATH}"/ruby/*/cache "${BUNDLE_PATH}"/ruby/*/bundler/gems/*/.git
 
 COPY . .
 
@@ -49,7 +37,7 @@ FROM base
 ENV PORT=4567
 
 RUN \
-  groupadd --system --gid 666 kubernaut; \
+  groupadd --system --gid 666 kubernaut && \
   useradd --system --uid 666 --gid kubernaut --create-home --shell /bin/bash kubernaut
 
 COPY --from=build "${BUNDLE_PATH}" "${BUNDLE_PATH}"

kustomize/app/cronjob.yaml

@@ -0,0 +1,19 @@
+apiVersion: batch/v1
+kind: CronJob
+metadata:
+  name: kubernaut
+spec:
+  schedule: "* * * * *"
+  jobTemplate:
+    spec:
+      template:
+        spec:
+          containers:
+          - name: hello
+            image: busybox:1.37
+            imagePullPolicy: IfNotPresent
+            command:
+            - /bin/sh
+            - -c
+            - echo "=^.^= <(meow)"
+          restartPolicy: OnFailure

kustomize/app/kustomization.yaml

@@ -7,3 +7,4 @@ resources:
   - deployment.yaml
   - hpa.yaml
   - services.yaml
+  - cronjob.yaml