diff --git a/charts/cert-manager/templates/deployment.yaml b/charts/cert-manager/templates/deployment.yaml
index aea5736..8a4a973 100644
--- a/charts/cert-manager/templates/deployment.yaml
+++ b/charts/cert-manager/templates/deployment.yaml
@@ -15,6 +15,10 @@
   {{- end }}
 spec:
   replicas: {{ .Values.replicaCount }}
+  {{- /* The if statement below is equivalent to {{- if $value }} but will also return true for 0. */ -}}
+  {{- if not (has (quote .Values.global.revisionHistoryLimit) (list "" (quote ""))) }}
+  revisionHistoryLimit: {{ .Values.global.revisionHistoryLimit }}
+  {{- end }}
   selector:
     matchLabels:
       app.kubernetes.io/name: {{ template "cert-manager.name" . }}
@@ -39,7 +43,7 @@
       annotations:
         {{- toYaml . | nindent 8 }}
       {{- end }}
-      {{- if and .Values.prometheus.enabled (not .Values.prometheus.servicemonitor.enabled) }}
+      {{- if and .Values.prometheus.enabled (not (or .Values.prometheus.servicemonitor.enabled .Values.prometheus.podmonitor.enabled)) }}
       {{- if not .Values.podAnnotations }}
       annotations:
       {{- end }}
@@ -48,10 +52,17 @@
         prometheus.io/port: '9402'
       {{- end }}
     spec:
+      {{- if not .Values.serviceAccount.create }}
+      {{- with .Values.global.imagePullSecrets }}
+      imagePullSecrets:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- end }}
       serviceAccountName: {{ template "cert-manager.serviceAccountName" . }}
       {{- if hasKey .Values "automountServiceAccountToken" }}
       automountServiceAccountToken: {{ .Values.automountServiceAccountToken }}
       {{- end }}
+      enableServiceLinks: {{ .Values.enableServiceLinks }}
       {{- with .Values.global.priorityClassName }}
       priorityClassName: {{ . | quote }}
       {{- end }}
@@ -59,20 +70,30 @@
       securityContext:
         {{- toYaml . | nindent 8 }}
       {{- end }}
-      {{- with .Values.volumes }}
+      {{- if or .Values.volumes .Values.config}}
       volumes:
+        {{- if .Values.config }}
+        - name: config 
+          configMap: 
+            name: {{ include "cert-manager.fullname" . }}
+        {{- end }}
+        {{ with .Values.volumes }}
         {{- toYaml . | nindent 8 }}
+        {{- end }}
       {{- end }}
       containers:
         - name: {{ .Chart.Name }}-controller
-          {{- with .Values.image }}
-          image: "{{- if .registry -}}{{ .registry }}/{{- end -}}{{ .repository }}{{- if (.digest) -}} @{{ .digest }}{{- else -}}:{{ default $.Chart.AppVersion .tag }} {{- end -}}"
-          {{- end }}
+          image: "{{ template "image" (tuple .Values.image $.Chart.AppVersion) }}"
           imagePullPolicy: {{ .Values.image.pullPolicy }}
           args:
-          {{- if .Values.global.logLevel }}
+          {{- /* The if statement below is equivalent to {{- if $value }} but will also return true for 0. */ -}}
+          {{- if not (has (quote .Values.global.logLevel) (list "" (quote ""))) }}
           - --v={{ .Values.global.logLevel }}
           {{- end }}
+          {{- if .Values.config }}
+          - --config=/var/cert-manager/config/config.yaml
+          {{- end }}
+          {{- $config := default .Values.config "" }}
           {{- if .Values.clusterResourceNamespace }}
           - --cluster-resource-namespace={{ .Values.clusterResourceNamespace }}
           {{- else }}
@@ -122,6 +143,9 @@
           {{- with .Values.dns01RecursiveNameservers }}
           - --dns01-recursive-nameservers={{ . }}
           {{- end }}
+          {{- if .Values.disableAutoApproval }}
+          - --controllers=-certificaterequests-approver
+          {{- end }}
           ports:
           - containerPort: 9402
             name: http-metrics
@@ -133,9 +157,15 @@
           securityContext:
             {{- toYaml . | nindent 12 }}
           {{- end }}
-          {{- with .Values.volumeMounts }}
+          {{- if or .Values.config .Values.volumeMounts }}
           volumeMounts:
+            {{- if .Values.config }}
+            - name: config 
+              mountPath: /var/cert-manager/config
+            {{- end }}
+            {{- with .Values.volumeMounts }}
             {{- toYaml . | nindent 12 }}
+            {{- end }}
           {{- end }}
           env:
           - name: POD_NAMESPACE
@@ -202,3 +232,6 @@
       dnsConfig:
         {{- toYaml . | nindent 8 }}
       {{- end }}
+      {{- with .Values.hostAliases }}
+      hostAliases: {{ toYaml . | nindent 8 }}
+      {{- end }}
\ No newline at end of file