Not going to reimplement tapas in crystal

functions.yml

@@ -15,7 +15,3 @@ functions:
     lang: python3-flask
     handler: ./tapas
     image: ralsina/tapas:latest
-  tapas2:
-    lang: crystal
-    handler: ./tapas2
-    image: ralsina/tapas2:latest

tapas2/handler.cr

@@ -1,7 +0,0 @@
-require "json"
-
-class Handler
-  def run(req : String)
-    return JSON::Any.new("Hello, Crystal. You said: #{req}")
-  end
-end

tapas2/shard.yml

@@ -1,7 +0,0 @@
-name: crystal_faas_function
-version: 0.1.0
-
-# dependencies:
-#   pg:
-#     github: will/crystal-pg
-#     version: "~> 0.5"

template/crystal/Dockerfile

@@ -1,30 +1,29 @@
-FROM crystallang/crystal:1.8.0 as builder
-
-RUN apt update \
-    && apt install -y curl \
-    && echo "Pulling watchdog binary from Github." \
-    && curl -sSL https://github.com/openfaas/faas/releases/download/0.9.6/fwatchdog > /usr/bin/fwatchdog \
-    && chmod +x /usr/bin/fwatchdog
+FROM --platform=${TARGETPLATFORM:-linux/amd64} ghcr.io/openfaas/of-watchdog:0.9.10 as watchdog
+FROM --platform=${TARGETPLATFORM:-linux/amd64} alpine as build
 
+RUN apk update && apk upgrade
+RUN apk add crystal shards
 WORKDIR /home/app
 COPY . .
 
 COPY function/shard.yml shard.yml
 RUN shards install
-RUN crystal build main.cr -o handler --release
-
-FROM crystallang/crystal:1.8.0
-RUN apt install ca-certificates
+RUN crystal build main.cr -o handler --release --static
+RUN strip handler
 
+FROM --platform=${TARGETPLATFORM:-linux/amd64} alpine as ship
+RUN apk update && apk upgrade
 # Add non root user
-RUN adduser app
-RUN mkdir -p /home/app
+# Add non root user
+RUN addgroup -S app && adduser app -S -G app
+RUN chown app /home/app
 
 WORKDIR /home/app
 
-COPY --from=builder /usr/bin/fwatchdog   .
-COPY --from=builder /home/app/function/  .
-COPY --from=builder /home/app/handler    .
+COPY --from=build /home/app/function/  .
+COPY --from=build /home/app/handler    .
+COPY --from=watchdog /fwatchdog /home/app/fwatchdog
+RUN chmod +x /home/app/fwatchdog
 
 RUN chown -R app /home/app