diff --git a/templates/deployment-sidekiq.yaml b/templates/deployment-sidekiq.yaml
index 401bcea..d097553 100644
--- a/templates/deployment-sidekiq.yaml
+++ b/templates/deployment-sidekiq.yaml
@@ -66,11 +66,16 @@ spec:
             claimName: {{ template "mastodon.fullname" $context }}-system
       {{- end }}
       {{- include "mastodon.statsdExporterVolume" $ | indent 8 }}
+      {{- if dig "customDatabaseConfigYml" "configMapRef" "name" false . }}
+        - name: config-database-yml
+          configMap:
+            name: {{ .customDatabaseConfigYml.configMapRef.name }}
+      {{- end }}
       containers:
         - name: {{ $context.Chart.Name }}
           securityContext:
             {{- toYaml $context.Values.mastodon.sidekiq.securityContext | nindent 12 }}
-          image: "{{ $context.Values.image.repository }}:{{ $context.Values.image.tag | default $context.Chart.AppVersion }}"
+          image: "{{ coalesce (dig "image" "repository" false .) $context.Values.image.repository }}:{{ coalesce (dig "image" "tag" false .) $context.Values.image.tag $context.Chart.AppVersion }}"
           imagePullPolicy: {{ $context.Values.image.pullPolicy }}
           command:
             - bundle
@@ -142,6 +147,11 @@ spec:
             - name: system
               mountPath: /opt/mastodon/public/system
           {{- end }}
+          {{- if dig "customDatabaseConfigYml" "configMapRef" "name" false . }}
+            - name: config-database-yml
+              mountPath: /opt/mastodon/config/database.yml
+              subPath: {{ .customDatabaseConfigYml.configMapRef.key }}
+          {{- end }}
           resources:
             {{- toYaml (default (default $context.Values.resources $context.Values.mastodon.sidekiq.resources) .resources) | nindent 12 }}
       {{- include "mastodon.statsdExporterContainer" $ | indent 8 }}
diff --git a/templates/deployment-streaming.yaml b/templates/deployment-streaming.yaml
index 5fc8d46..e400ee9 100644
--- a/templates/deployment-streaming.yaml
+++ b/templates/deployment-streaming.yaml
@@ -42,7 +42,7 @@ spec:
           securityContext:
             {{- toYaml . | nindent 12 }}
           {{- end }}
-          image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
+          image: "{{ coalesce .Values.mastodon.streaming.image.repository .Values.image.repository }}:{{ coalesce .Values.mastodon.streaming.image.tag .Values.image.tag .Chart.AppVersion }}"
           imagePullPolicy: {{ .Values.image.pullPolicy }}
           command:
             - node
diff --git a/templates/deployment-web.yaml b/templates/deployment-web.yaml
index db46120..e29088a 100644
--- a/templates/deployment-web.yaml
+++ b/templates/deployment-web.yaml
@@ -48,6 +48,11 @@ spec:
           persistentVolumeClaim:
             claimName: {{ template "mastodon.fullname" . }}-system
       {{- include "mastodon.statsdExporterVolume" $ | indent 8 }}
+      {{- if .Values.mastodon.web.customDatabaseConfigYml.configMapRef.name }}
+        - name: config-database-yml
+          configMap:
+            name: {{ .Values.mastodon.web.customDatabaseConfigYml.configMapRef.name }}
+      {{- end }}
       {{- end }}
       containers:
         - name: {{ .Chart.Name }}-web
@@ -55,7 +60,7 @@ spec:
           securityContext:
             {{- toYaml . | nindent 12 }}
           {{- end }}
-          image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
+          image: "{{ coalesce .Values.mastodon.web.image.repository .Values.image.repository }}:{{ coalesce .Values.mastodon.web.image.tag .Values.image.tag .Chart.AppVersion }}"
           imagePullPolicy: {{ .Values.image.pullPolicy }}
           command:
             - bundle
@@ -130,6 +135,11 @@ spec:
             - name: system
               mountPath: /opt/mastodon/public/system
           {{- end }}
+          {{- if .Values.mastodon.web.customDatabaseConfigYml.configMapRef.name }}
+            - name: config-database-yml
+              mountPath: /opt/mastodon/config/database.yml
+              subPath: {{ .Values.mastodon.web.customDatabaseConfigYml.configMapRef.key }}
+          {{- end }}
           ports:
             - name: http
               containerPort: {{ .Values.mastodon.web.port }}
diff --git a/values.yaml b/values.yaml
index 6827e54..e40e683 100644
--- a/values.yaml
+++ b/values.yaml
@@ -126,6 +126,15 @@ mastodon:
         - mailers,2
         - pull
         - scheduler # Make sure the scheduler queue only exists once and with a worker that has 1 replica.
+        image:
+          repository:
+          tag:
+        # allows you to mount a custom database.yml from a configmap
+        # please note that we do not advise using a read-only replica for sidekiq workers
+        customDatabaseConfigYml:
+          configMapRef:
+            name:
+            key:
     #- name: push-pull
     #  concurrency: 50
     #  resources: {}
@@ -162,6 +171,9 @@ mastodon:
     # password must be located in keys named `login` and `password` respectively.
     existingSecret:
   streaming:
+    image:
+      repository:
+      tag:
     port: 4000
     # -- this should be set manually since os.cpus() returns the number of CPUs on
     # the node running the pod, which is unrelated to the resources allocated to
@@ -210,6 +222,15 @@ mastodon:
     maxThreads: "5"
     workers: "2"
     persistentTimeout: "20"
+    image:
+      repository:
+      tag:
+    # allows you to mount a custom database.yml from a configmap
+    # for example if you want to use a read-only replica
+    customDatabaseConfigYml:
+      configMapRef:
+        name:
+        key:
 
   metrics:
     statsd: