Coder: Helm chart and configuration

Change-Id: I43515c289001bf1407aee1f9734151a261a7808a
diff --git a/charts/coder/templates/_coder.tpl b/charts/coder/templates/_coder.tpl
new file mode 100644
index 0000000..d0846ec
--- /dev/null
+++ b/charts/coder/templates/_coder.tpl
@@ -0,0 +1,108 @@
+{{/*
+Service account to merge into the libcoder template
+*/}}
+{{- define "coder.serviceaccount" -}}
+{{- end -}}
+
+{{/*
+Deployment to merge into the libcoder template
+*/}}
+{{- define "coder.deployment" -}}
+spec:
+  template:
+    spec:
+      containers:
+      -
+{{ include "libcoder.containerspec" (list . "coder.containerspec") | indent 8}}
+
+{{- end -}}
+
+{{/*
+ContainerSpec for the Coder container of the Coder deployment
+*/}}
+{{- define "coder.containerspec" -}}
+args:
+{{- if .Values.coder.commandArgs }}
+  {{- toYaml .Values.coder.commandArgs | nindent 12 }}
+{{- else }}
+  {{- if .Values.coder.workspaceProxy }}
+- wsproxy
+  {{- end }}
+- server
+{{- end }}
+{{- if .Values.coder.envFrom }}
+envFrom:
+{{- with .Values.coder.envFrom }}
+{{ toYaml . }}
+{{- end }}
+{{- end }}
+env:
+- name: CODER_HTTP_ADDRESS
+  value: "0.0.0.0:8080"
+- name: CODER_PROMETHEUS_ADDRESS
+  value: "0.0.0.0:2112"
+{{- if .Values.provisionerDaemon.pskSecretName }}
+- name: CODER_PROVISIONER_DAEMON_PSK
+  valueFrom:
+    secretKeyRef:
+      name: {{ .Values.provisionerDaemon.pskSecretName | quote }}
+      key: psk
+{{- end }}
+  # Set the default access URL so a `helm apply` works by default.
+  # See: https://github.com/coder/coder/issues/5024
+{{- $hasAccessURL := false }}
+{{- range .Values.coder.env }}
+{{- if eq .name "CODER_ACCESS_URL" }}
+{{- $hasAccessURL = true }}
+{{- end }}
+{{- end }}
+{{- if and (not $hasAccessURL) .Values.coder.envUseClusterAccessURL }}
+- name: CODER_ACCESS_URL
+  value: {{ include "coder.defaultAccessURL" . | quote }}
+{{- end }}
+# Used for inter-pod communication with high-availability.
+- name: KUBE_POD_IP
+  valueFrom:
+    fieldRef:
+      fieldPath: status.podIP
+- name: CODER_DERP_SERVER_RELAY_URL
+  value: "http://$(KUBE_POD_IP):8080"
+{{- include "coder.tlsEnv" . }}
+{{- with .Values.coder.env }}
+{{ toYaml . }}
+{{- end }}
+ports:
+- name: "http"
+  containerPort: 8080
+  protocol: TCP
+  {{- if eq (include "coder.tlsEnabled" .) "true" }}
+- name: "https"
+  containerPort: 8443
+  protocol: TCP
+  {{- end }}
+  {{- range .Values.coder.env }}
+  {{- if eq .name "CODER_PROMETHEUS_ENABLE" }}
+  {{/*
+    This sadly has to be nested to avoid evaluating the second part
+    of the condition too early and potentially getting type errors if
+    the value is not a string (like a `valueFrom`). We do not support
+    `valueFrom` for this env var specifically.
+    */}}
+  {{- if eq .value "true" }}
+- name: "prometheus-http"
+  containerPort: 2112
+  protocol: TCP
+  {{- end }}
+  {{- end }}
+  {{- end }}
+readinessProbe:
+  httpGet:
+    path: /healthz
+    port: "http"
+    scheme: "HTTP"
+livenessProbe:
+  httpGet:
+    path: /healthz
+    port: "http"
+    scheme: "HTTP"
+{{- end }}