feat: add apps chart (#4)

charts/explorer/.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/

charts/explorer/Chart.yaml

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+apiVersion: v2
+name: explorer
+description: A Helm chart for Topos Explorer
+
+# 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.
+# It is recommended to use it with quotes.
+appVersion: "main"

charts/explorer/templates/00-explorer-service.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: explorer
+  labels:
+    app: explorer
+spec:
+  type: ClusterIP
+  ports:
+    - name: http
+      port: { { $.Values.ports.http } }
+      targetPort: http
+      protocol: TCP
+  selector:
+    app: explorer
+  sessionAffinity: ClientIP

charts/explorer/templates/01-explorer-pod.yaml

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+apiVersion: v1
+kind: Pod
+metadata:
+  name: explorer
+  labels:
+    app: explorer
+spec:
+  restartPolicy: Always
+  containers:
+    - name: explorer
+      image: "{{ $.Values.image.repository }}:{{ $.Values.image.tag }}"
+      imagePullPolicy: Always
+      ports:
+        - name: http
+          containerPort: "{{ $.Values.containerPorts.http }}"

charts/explorer/templates/03-lets-encrypt-issuers.yaml

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+{{ $issuer := lookup "cert-manager.io/v1" "Issuer" .Release.Namespace "letsencrypt-staging" }}
+{{ if not $issuer }}
+apiVersion: cert-manager.io/v1
+kind: Issuer
+metadata:
+  name: letsencrypt-staging
+spec:
+  acme:
+    server: https://acme-staging-v02.api.letsencrypt.org/directory
+    email: {{ $.Values.acme.email }}
+    privateKeySecretRef:
+      name: letsencrypt-staging
+    solvers:
+    - http01:
+        ingress:
+          class: nginx
+{{ end }}
+---
+{{ $issuer := lookup "cert-manager.io/v1" "Issuer" .Release.Namespace "letsencrypt-production" }}
+{{ if not $issuer }}
+apiVersion: cert-manager.io/v1
+kind: Issuer
+metadata:
+  name: letsencrypt-production
+spec:
+  acme:
+    server: https://acme-v02.api.letsencrypt.org/directory
+    email: {{ $.Values.acme.email }}
+    privateKeySecretRef:
+      name: letsencrypt-production
+    solvers:
+    - http01:
+        ingress:
+          class: nginx
+{{ end }}

charts/explorer/templates/04-explorer-ingress.yaml

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+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: explorer
+  annotations:
+    kubernetes.io/ingress.class: "nginx"
+    cert-manager.io/issuer: "letsencrypt-{{ .Values.acme.environment }}"
+spec:
+  tls:
+    - hosts:
+        - "{{ .Values.host }}"
+      secretName: "{{ .Values.host }}-secret-tls"
+  rules:
+    - host: "{{ .Values.host }}"
+      http:
+        paths:
+          - path: /
+            pathType: Prefix
+            backend:
+              service:
+                name: explorer
+                port:
+                  name: http

charts/explorer/values.yaml

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+# Default values for tce-all-in-one.
+# This is a YAML-formatted file.
+# Declare variables to be passed into your templates.
+
+host: nowhere.com
+
+acme:
+  email: [email protected]
+  # acme issuer type (staging | production)
+  environment: staging
+
+image:
+  repository: nobody
+  tag: main
+
+containerPorts:
+  http: 80
+
+ports:
+  http: 80