Create new project: pr-test1

mypath/Dockerfile

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+FROM alpine:latest
+
+RUN apk update && \
+    apk add  python3 
+
+# We copy just the requirements.txt first to leverage Docker cache
+COPY ./requirements.txt /app/requirements.txt
+
+WORKDIR /app
+
+RUN pip3 install -r requirements.txt
+
+COPY . /app
+
+ENTRYPOINT [ "python3" ]
+
+CMD [ "app.py" ]

mypath/K8s/deployment.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: flask-http
+spec:
+  selector:
+    k8s-app: flask-http
+  ports:
+    - port: 80
+      targetPort: 5000
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: flask-http
+  namespace: default
+  labels:
+    k8s-app: flask-http
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      k8s-app: flask-http
+  template:
+    metadata:
+      labels:
+        k8s-app: flask-http
+    spec:
+      containers:
+        - name: flask-http
+          image: tduek/flask-http:m-0.1
+          imagePullPolicy: Always
+          ports:
+            - containerPort: 5000
+              protocol: TCP
+          resources:
+            requests:
+              cpu: 500m
+              memory: 128Mi
+            limits:
+              cpu: 1000m
+              memory: 128Mi

mypath/Makefile

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+REPO?=tduek
+IMAGE?=flask-http
+TAG?=0.1
+MULTIARCH_TAG?=m-0.1
+PLATFORMS?=linux/amd64,linux/arm64
+
+all: build build-multiarch
+
+.PHONY: build
+build: ## Build and 
+	docker build -t $(REPO)/$(IMAGE):$(TAG) .
+
+.PHONY: push
+push: ## 
+	docker push $(REPO)/$(IMAGE):$(TAG) 
+
+.PHONY: build-multiarch
+build-multiarch: ## 
+	docker buildx build --platform $(PLATFORMS) -t $(REPO)/$(IMAGE):$(MULTIARCH_TAG) --push .
+
+.PHONY: deploy-k8s
+deploy-k8s: ## 
+	docker buildx build --platform $(PLATFORMS) -t $(REPO)/$(IMAGE):$(MULTIARCH_TAG) --push .
+

mypath/app.py

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+# flask_web/app.py
+
+from flask import Flask
+app = Flask(__name__)
+
+
+@app.route('/')
+def hello_world():
+    return 'Hey, we have Flask in a Docker container!'
+
+
+@app.route('/goaway')
+def goaway():
+    return 'GO AWAY!'
+
+
+if __name__ == '__main__':
+    app.run(debug=True, host='0.0.0.0')

mypath/catalog-info.yaml

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+apiVersion: backstage.io/v1alpha1
+kind: Component
+metadata:
+  name: "pr-test1"
+spec:
+  type: website
+  lifecycle: experimental
+  owner: user:guest

mypath/helm/.helmignore

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+# Patterns to ignore when building packages.
+# This supports shell glob matching, relative path matching, and
+# negation (prefixed with !). Only one pattern per line.
+.DS_Store
+# Common VCS dirs
+.git/
+.gitignore
+.bzr/
+.bzrignore
+.hg/
+.hgignore
+.svn/
+# Common backup files
+*.swp
+*.bak
+*.tmp
+*.orig
+*~
+# Various IDEs
+.project
+.idea/
+*.tmproj
+.vscode/

mypath/helm/Chart.yaml

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+apiVersion: v2
+name: mychart
+description: A Helm chart for Kubernetes
+
+# A chart can be either an 'application' or a 'library' chart.
+#
+# Application charts are a collection of templates that can be packaged into versioned archives
+# to be deployed.
+#
+# Library charts provide useful utilities or functions for the chart developer. They're included as
+# a dependency of application charts to inject those utilities and functions into the rendering
+# pipeline. Library charts do not define any templates and therefore cannot be deployed.
+type: application
+
+# This is the chart version. This version number should be incremented each time you make changes
+# to the chart and its templates, including the app version.
+# Versions are expected to follow Semantic Versioning (https://semver.org/)
+version: 0.1.0
+
+# This is the version number of the application being deployed. This version number should be
+# incremented each time you make changes to the application. Versions are not expected to
+# follow Semantic Versioning. They should reflect the version the application is using.
+appVersion: 1.16.0

mypath/helm/templates/deployment.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{.Values.name}}-deployment
+spec:
+  replicas: {{int .Values.replicas}}
+  selector:
+    matchLabels:
+      app: {{.Values.name}}
+  template:
+    metadata:
+      labels:
+        app: {{.Values.name}}
+    spec:
+      containers:
+      - name: {{.Values.name}}
+        image: {{.Values.image}}
+        ports:
+        - containerPort: 5000
+          protocol: TCP
+        resources:
+          requests:
+              cpu: {{.Values.resources.requests.cpu}}
+              memory: {{.Values.resources.requests.memory}}
+          limits:
+              cpu: {{.Values.resources.limits.cpu}}
+              memory: {{.Values.resources.limits.memory}}

mypath/helm/templates/namespace.yaml

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+{{- if .Values.createNamespace}}
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: {{.Values.namespace}}
+{{- end}}

mypath/helm/templates/service.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: {{.Values.name}}-svc
+spec:
+  type: {{.Values.serviceType}}
+  ports:
+  - port: {{.Values.servicePort}}
+    targetPort: {{.Values.serviceTargetPort}}
+    protocol: TCP
+  selector:
+    app: {{.Values.name}}

mypath/helm/values-prod.yaml

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+name: flask-http
+replicas: 1
+
+image: tduek/flask-http:m-0.1
+
+createNamespace: false
+namespace: flask-http-prod
+
+# Service Type allow you to specify what kind of service you want.
+# Possible values for ServiceType are:
+# ClusterIP | NodePort | LoadBalancer | ExternalName
+serviceType: ClusterIP
+
+# A Service can map an incoming port to any targetPort.
+# targetPort is where application is listening on inside the container.
+servicePort: 80
+serviceTargetPort: 5000
+
+resources:
+    requests:
+        cpu: 100m
+        memory: 128Mi
+    limits:
+        cpu: 200m
+        memory: 256Mi
+# Specify all environment variables to be added to the container.
+# The following two maps, config and secrets, are put into a ConfigMap
+# and a Secret, respectively.
+# Both are added to the container environment in podSpec as envFrom source.
+# env:
+#   config:
+#     key1: value1
+#   secrets:
+#     key2: value2

mypath/helm/values-staging.yaml

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+name: flask-http
+replicas: 1
+
+image: tduek/flask-http:m-0.1
+
+createNamespace: false
+namespace: flask-http-staging
+
+# Service Type allow you to specify what kind of service you want.
+# Possible values for ServiceType are:
+# ClusterIP | NodePort | LoadBalancer | ExternalName
+serviceType: ClusterIP
+
+# A Service can map an incoming port to any targetPort.
+# targetPort is where application is listening on inside the container.
+servicePort: 80
+serviceTargetPort: 5000
+
+resources:
+    requests:
+        cpu: 100m
+        memory: 128Mi
+    limits:
+        cpu: 200m
+        memory: 256Mi
+# Specify all environment variables to be added to the container.
+# The following two maps, config and secrets, are put into a ConfigMap
+# and a Secret, respectively.
+# Both are added to the container environment in podSpec as envFrom source.
+# env:
+#   config:
+#     key1: value1
+#   secrets:
+#     key2: value2

mypath/helm/values.yaml

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+name: flask-http
+replicas: 1
+
+image: tduek/flask-http:m-0.1
+
+createNamespace: false
+namespace: flask-http
+
+# Service Type allow you to specify what kind of service you want.
+# Possible values for ServiceType are:
+# ClusterIP | NodePort | LoadBalancer | ExternalName
+serviceType: ClusterIP
+
+# A Service can map an incoming port to any targetPort.
+# targetPort is where application is listening on inside the container.
+servicePort: 80
+serviceTargetPort: 5000
+
+resources:
+    requests:
+        cpu: 100m
+        memory: 128Mi
+    limits:
+        cpu: 200m
+        memory: 256Mi
+
+# Specify all environment variables to be added to the container.
+# The following two maps, config and secrets, are put into a ConfigMap
+# and a Secret, respectively.
+# Both are added to the container environment in podSpec as envFrom source.
+# env:
+#   config:
+#     key1: value1
+#   secrets:
+#     key2: value2

mypath/requirements.txt

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+Click==7.0
+Flask==1.0.2
+itsdangerous==1.1.0
+Jinja2==2.10
+MarkupSafe==1.1.1
+Werkzeug==0.15.3