Sort-of-working flask runtime

Makefile

@@ -1,5 +1,5 @@
 build: shard.yml $(wildcard src/**/*) $(runtimes/**/*)
-	shards build
+	shards build -d --error-trace
 	cat .rucksack >> bin/faaso
 	cat .rucksack >> bin/faaso-daemon
 proxy: build

runtimes/flask/Dockerfile.j2

@@ -0,0 +1,22 @@
+FROM --platform=${TARGETPLATFORM:-linux/amd64} alpine as build
+
+RUN apk update && apk upgrade && apk add python3 gcc musl-dev linux-headers python3-dev {{ ship_packages | join(" ") }} {{ devel_packages | join(" ") }} && apk cache clean
+
+WORKDIR /home/app
+
+COPY requirements.txt *.py ./
+RUN python3 -m venv venv
+RUN venv/bin/pip install uwsgi
+RUN venv/bin/pip install -r requirements.txt
+
+FROM --platform=${TARGETPLATFORM:-linux/amd64} alpine as ship
+RUN apk update && apk upgrade && apk add python3 uwsgi curl {{ ship_packages | join " " }} && apk cache clean
+RUN addgroup -S app && adduser app -S -G app
+
+WORKDIR /home/app
+USER app
+
+COPY --from=build /home/app/  .
+
+CMD ["venv/bin/uwsgi", "--http", "0.0.0.0:3000", "--master", "-p", "4", "-w", "funko:app"]
+HEALTHCHECK {{ healthcheck_options }}  CMD {{ healthcheck_command }}

runtimes/flask/main.py

@@ -0,0 +1,6 @@
+from flask import Flask
+
+app = Flask({{name}})
+
+if __name__ == '__main__':
+    serve(app, host='0.0.0.0', port=5000)

runtimes/flask/template/funko.py.j2

@@ -0,0 +1,7 @@
+from flask import Flask
+
+app = Flask("{{name}}")
+
+@app.route('/')
+def handle(req):
+    return "Hello World from Flask!"

runtimes/flask/template/funko.yml.j2

@@ -0,0 +1,2 @@
+name: {{ name }}
+runtime: {{ runtime }}

runtimes/flask/template/requirements.txt

@@ -0,0 +1 @@
+flask

src/runtime.cr

@@ -27,11 +27,12 @@ module Runtime
     elsif File.exists? runtime
       Log.info { "Using directory #{runtime} as runtime" }
       runtime_base = "#{runtime}"
-      runtime_files = Dir.glob("#{runtime_base}/**/*")
+      runtime_files = Dir.glob("#{runtime_base}/**/*").select { |file| File.file?(file) }
+      runtime_files = runtime_files.map { |file| Path[file].normalize.to_s }
     else
       raise Exception.new("Can't find runtime #{runtime}")
     end
-    {runtime_base, runtime_files.reject(&.starts_with? "#{runtime_base}template")}
+    {runtime_base, runtime_files.reject(&.starts_with? Path[runtime_base, "template"].normalize.to_s)}
   end
 
   def self.template_files(runtime : String) : {String, Array(String)}
@@ -44,7 +45,8 @@ module Runtime
     elsif File.exists? runtime
       Log.info { "Using directory #{runtime} as runtime" }
       template_base = "#{runtime}/template"
-      template_files = Dir.glob("#{template_base}/**/*")
+      template_files = Dir.glob("#{template_base}/**/*").select { |file| File.file?(file) }
+      template_files = template_files.map { |file| Path[file].normalize.to_s }
     else
       raise Exception.new("Can't find runtime #{runtime}")
     end