Use base58

.hadolint.yml

@@ -0,0 +1,3 @@
+ignored:
+  - DL3018
+  - DL3059

.pre-commit-config.yaml

@@ -31,3 +31,8 @@ repos:
           entry: test ! -s config/funkos
           language: system
           pass_filenames: false
+    - repo: https://github.com/hadolint/hadolint
+      rev: v2.12.0
+      hooks:
+        - id: hadolint-docker
+          exclude: 'j2$'

Dockerfile

@@ -1,5 +1,13 @@
-FROM --platform=${TARGETPLATFORM:-linux/amd64} alpine as build
-RUN apk update && apk add crystal shards yaml-dev openssl-dev zlib-dev libxml2-dev make && apk cache clean
+FROM --platform=${TARGETPLATFORM:-linux/amd64} alpine:3.20 AS build
+RUN apk add --no-cache \
+    crystal \
+    shards \
+    yaml-dev \
+    openssl-dev \
+    zlib-dev \
+    libxml2-dev \
+    make
+RUN rm -rf /var/cache/apk/*
 RUN addgroup -S app && adduser app -S -G app
 WORKDIR /home/app
 COPY shard.yml Makefile ./
@@ -9,8 +17,22 @@ COPY runtimes/ runtimes/
 RUN make
 # RUN strip bin/*
 
-FROM --platform=${TARGETPLATFORM:-linux/amd64} alpine as ship
-RUN apk update && apk add caddy nss-tools multirun docker openssl zlib yaml pcre2 gc libevent libgcc libxml2 ttyd && apk cache clean
+FROM --platform=${TARGETPLATFORM:-linux/amd64} alpine:3.20 AS ship
+RUN apk add --no-cache \
+    caddy \
+    nss-tools \
+    multirun \
+    docker \
+    openssl \
+    zlib \
+    yaml \
+    pcre2 \
+    gc \
+    libevent \
+    libgcc \
+    libxml2 \
+    ttyd
+RUN rm -rf /var/cache/apk/*
 
 # Unprivileged user
 RUN addgroup -S app && adduser app -S -G app
@@ -21,7 +43,6 @@ COPY public/ public/
 COPY --from=build /home/app/bin/faaso-daemon /home/app/bin/faaso /usr/bin/
 
 # Mount points for persistent data
-RUN mkdir /secrets
-RUN mkdir /config
+RUN mkdir /secrets /config
 
 CMD ["/usr/bin/multirun", "-v", "faaso-daemon", "caddy run --config config/Caddyfile"]

shard.lock

@@ -4,6 +4,10 @@ shards:
     git: https://github.com/sija/backtracer.cr.git
     version: 1.2.2
 
+  base58:
+    git: https://github.com/crystal-china/base58.cr.git
+    version: 0.1.0+git.commit.d1150d4a6f086013a475640ad00e561a2fe1082a
+
   cr-config:
     git: https://github.com/crystal-community/cr-config.git
     version: 5.1.0+git.commit.5eae3dfbf97da7dfa7c6e64a2a508069948518d3

shard.yml

@@ -15,6 +15,8 @@ crystal: ">= 1.12.2"
 license: MIT
 
 dependencies:
+  base58:
+    github: crystal-china/base58.cr
   crest:
     github: mamantoha/crest
   crinja:

src/commands/build.cr

@@ -1,3 +1,5 @@
+require "base58"
+
 module Faaso
   module Commands
     # Build images for one or more funkos from source
@@ -7,7 +9,7 @@ module Faaso
         # Create temporary build location
 
         funkos.each do |funko|
-          tmp_dir = Path.new("tmp", UUID.random.to_s)
+          tmp_dir = Path.new("tmp", Random.base58(8))
           Dir.mkdir_p(tmp_dir) unless File.exists? tmp_dir
 
           funko.runtime = nil if options["--no-runtime"]

src/daemon/funko.cr

@@ -1,3 +1,4 @@
+require "base58"
 require "docr"
 require "kemal"
 require "../funko.cr"
@@ -34,7 +35,7 @@ module Funko
   # mosquito-cr/mosquito to make it a job queue
   post "/funkos/build/" do |env|
     # Create place to build funko
-    tmp_dir = Path.new("tmp", UUID.random.to_s)
+    tmp_dir = Path.new("tmp", Random.base58(8))
     Dir.mkdir_p(tmp_dir) unless File.exists? tmp_dir
 
     # Expand tarball in there

src/funko.cr

@@ -309,7 +309,7 @@ module Funko
       )
 
       docker_api = Docr::API.new(Docr::Client.new)
-      response = docker_api.containers.create(name: "faaso-#{name}-#{randstr}", config: conf)
+      response = docker_api.containers.create(name: "faaso-#{name}-#{Random.base58(6)}", config: conf)
       response.@warnings.each { |msg| Log.warn { msg } }
       docker_api.containers.start(response.@id) if autostart
       response.@id
@@ -349,8 +349,3 @@ module Funko
     end
   end
 end
-
-def randstr(length = 6) : String
-  chars = "abcdefghijklmnopqrstuvwxyz0123456789"
-  String.new(Bytes.new(chars.to_slice.sample(length).to_unsafe, length))
-end