diff --git a/charts/tezos-signer-forwarder/Chart.yaml b/charts/tezos-signer-forwarder/Chart.yaml
new file mode 100644
index 000000000..9089b9ac4
--- /dev/null
+++ b/charts/tezos-signer-forwarder/Chart.yaml
@@ -0,0 +1,6 @@
+apiVersion: v2
+name: tezos-signer-forwarder
+description: A chart for tezos-signer-forwarder
+type: application
+version: 0.0.0
+appVersion: "10.0"
diff --git a/charts/tezos-signer-forwarder/scripts/entrypoint.sh b/charts/tezos-signer-forwarder/scripts/entrypoint.sh
new file mode 100644
index 000000000..41233320e
--- /dev/null
+++ b/charts/tezos-signer-forwarder/scripts/entrypoint.sh
@@ -0,0 +1,3 @@
+#!/bin/sh
+
+/usr/sbin/sshd -D -e -p ${TUNNEL_ENDPOINT_PORT}
diff --git a/charts/tezos-signer-forwarder/scripts/signer_exporter.py b/charts/tezos-signer-forwarder/scripts/signer_exporter.py
new file mode 100644
index 000000000..b81362024
--- /dev/null
+++ b/charts/tezos-signer-forwarder/scripts/signer_exporter.py
@@ -0,0 +1,53 @@
+#!/usr/bin/env python
+import os
+from flask import Flask, request, jsonify
+import requests
+
+import logging
+log = logging.getLogger('werkzeug')
+log.setLevel(logging.ERROR)
+
+application = Flask(__name__)
+
+readiness_probe_path = os.getenv("READINESS_PROBE_PATH")
+signer_port = os.getenv("SIGNER_PORT")
+signer_metrics = os.getenv("SIGNER_METRICS") == "true"
+
+# https://kubernetes.io/docs/tasks/configure-pod-container/configure-liveness-readiness-startup-probes/
+# Configured readiness probe timeoutSeconds is 5s, timeout sync request before that.
+SIGNER_CONNECT_TIMEOUT = 4.5
+
+@application.route('/metrics', methods=['GET'])
+def prometheus_metrics():
+    '''
+    Prometheus endpoint
+    This combines:
+    * the metrics from the signer, which themselves are a combination of the
+      prometheus node-exporter and custom probes (power status, etc)
+    * the `unhealthy_signers_total` metric exported by this script, verifying
+      whether the signer URL configured upstream returns a 200 OK
+    '''
+
+    try:
+        probe = requests.get(f"http://localhost:{signer_port}{readiness_probe_path}", timeout=SIGNER_CONNECT_TIMEOUT)
+    except requests.exceptions.ConnectTimeout:
+        #Timeout connect to node
+        probe = None
+    except requests.exceptions.ReadTimeout:
+        #Timeout read from node
+        probe = None
+    except requests.exceptions.RequestException:
+        probe = None
+    if probe and signer_metrics:
+        try:
+            healthz = requests.get(f"http://localhost:{signer_port}/healthz").text
+        except requests.exceptions.RequestException:
+            healthz = None
+    else:
+        healthz = None
+    return '''# number of unhealthy signers - should be 0 or 1
+unhealthy_signers_total %s
+%s''' % (0 if probe else 1, healthz or "")
+
+if __name__ == "__main__":
+   application.run(host = "0.0.0.0", port = 31732, debug = False)
diff --git a/charts/tezos-signer-forwarder/templates/_helpers.tpl b/charts/tezos-signer-forwarder/templates/_helpers.tpl
new file mode 100644
index 000000000..c3113e365
--- /dev/null
+++ b/charts/tezos-signer-forwarder/templates/_helpers.tpl
@@ -0,0 +1,62 @@
+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "tezos-signer-forwarder.name" -}}
+{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Create a default fully qualified app name.
+We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
+If release name contains chart name it will be used as a full name.
+*/}}
+{{- define "tezos-signer-forwarder.fullname" -}}
+{{- if .Values.fullnameOverride }}
+{{- .Values.fullnameOverride | trunc 63 | trimSuffix "-" }}
+{{- else }}
+{{- $name := default .Chart.Name .Values.nameOverride }}
+{{- if contains $name $.Release.Name }}
+{{- .Release.Name | trunc 63 | trimSuffix "-" }}
+{{- else }}
+{{- printf "%s-%s" $.Release.Name $name | trunc 63 | trimSuffix "-" }}
+{{- end }}
+{{- end }}
+{{- end }}
+
+{{/*
+Create chart name and version as used by the chart label.
+*/}}
+{{- define "tezos-signer-forwarder.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Common labels
+*/}}
+{{- define "tezos-signer-forwarder.labels" -}}
+helm.sh/chart: {{ include "tezos-signer-forwarder.chart" . }}
+{{ include "tezos-signer-forwarder.selectorLabels" . }}
+{{- if .Chart.AppVersion }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+{{- end }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end }}
+
+{{/*
+Selector labels
+*/}}
+{{- define "tezos-signer-forwarder.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "tezos-signer-forwarder.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end }}
+
+{{/*
+Create the name of the service account to use
+*/}}
+{{- define "tezos-signer-forwarder.serviceAccountName" -}}
+{{- if .Values.serviceAccount.create }}
+{{- default (include "tezos-signer-forwarder.fullname" .) .Values.serviceAccount.name }}
+{{- else }}
+{{- default "default" .Values.serviceAccount.name }}
+{{- end }}
+{{- end }}
diff --git a/charts/tezos-signer-forwarder/templates/alertmanagerconfig.yaml b/charts/tezos-signer-forwarder/templates/alertmanagerconfig.yaml
new file mode 100644
index 000000000..5a8701837
--- /dev/null
+++ b/charts/tezos-signer-forwarder/templates/alertmanagerconfig.yaml
@@ -0,0 +1,63 @@
+{{- if .Values.alertmanagerConfig.enabled }}
+{{- range .Values.signers }}
+{{- if .monitoring_email }}
+{{ $signer := . }}
+{{- range .endpoints }}
+{{- if .alert_when_down }}
+apiVersion: monitoring.coreos.com/v1alpha1
+kind: AlertmanagerConfig
+metadata:
+  name: tezos-signer-{{ $signer.name }}-{{ .alias }}-email
+  labels:
+{{- toYaml $.Values.alertmanagerConfig.labels | nindent 4 }}
+spec:
+  route:
+    groupBy: ['job']
+    groupWait: 30s
+    groupInterval: 5m
+    repeatInterval: 12h
+    receiver: 'email_{{ $signer.name }}'
+    matchers:
+    - name: service
+      value: tezos-remote-signer-{{ $signer.name }}
+      regex: false
+    - name: alertType
+      value: tezos-remote-signer-alert
+      regex: false
+    - name: tezos_endpoint_name
+      value: {{ .alias }}
+      regex: false
+    continue: false
+
+  receivers:
+  - name: 'email_{{ $signer.name }}'
+    emailConfigs:
+    - to: "{{ $signer.monitoring_email }}"
+      sendResolved: true
+      headers:
+      - key: subject
+        value: '{{`[{{ .Status | toUpper }}{{ if eq .Status "firing" }}:{{ .Alerts.Firing | len }}{{ end }}] {{ .CommonLabels.alertname }}`}}'
+      html: >-
+        {{`{{ if eq .Status "firing" }}
+        Attention Required for Tezos Remote Signer:
+        {{ else }}
+        Resolved Alert for Tezos Remote Signer:
+        {{ end }}
+        {{ range .Alerts -}}
+        {{ .Annotations.summary }}
+        {{ end }}`}}
+      text: >-
+        {{`{{ if eq .Status "firing" }}
+        Attention Required for Tezos Remote Signer:
+        {{ else }}
+        Resolved Alert for Tezos Remote Signer:
+        {{ end }}
+        {{ range .Alerts -}}
+        {{ .Annotations.summary }}
+        {{ end }}`}}
+---
+{{- end }}
+{{- end }}
+{{- end }}
+{{- end }}
+{{- end }}
diff --git a/charts/tezos-signer-forwarder/templates/config.yaml b/charts/tezos-signer-forwarder/templates/config.yaml
new file mode 100644
index 000000000..975712d18
--- /dev/null
+++ b/charts/tezos-signer-forwarder/templates/config.yaml
@@ -0,0 +1,12 @@
+{{- range .Values.signers }}
+{{- $name := .name }}
+{{- range $i, $endpoint := .endpoints }}
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: tezos-signer-forwarder-config-{{ $name }}-{{ $i }}
+data:
+  authorized_keys: "{{ $endpoint.ssh_pubkey }} signer"
+---
+{{- end }}
+{{- end }}
diff --git a/charts/tezos-signer-forwarder/templates/prometheusrule.yaml b/charts/tezos-signer-forwarder/templates/prometheusrule.yaml
new file mode 100644
index 000000000..f0090d558
--- /dev/null
+++ b/charts/tezos-signer-forwarder/templates/prometheusrule.yaml
@@ -0,0 +1,51 @@
+{{- if .Values.prometheusRule.enabled }}
+apiVersion: monitoring.coreos.com/v1
+kind: PrometheusRule
+metadata:
+  labels:
+{{- toYaml .Values.prometheusRule.labels | nindent 4 }}
+  name: tezos-remote-signer-rules
+spec:
+  groups:
+  - name: tezos-remote-signer.rules
+    rules:
+    - alert: SignerPowerLoss
+      annotations:
+        description: 'Remote signer "{{`{{ $labels.tezos_endpoint_name }}`}}" for baker "{{`{{ $labels.tezos_baker_name }}`}}" has lost power'
+        summary: 'Remote signer "{{`{{ $labels.tezos_endpoint_name }}`}}" for baker "{{`{{ $labels.tezos_baker_name }}`}}" has lost power'
+      expr: power{namespace="{{ .Release.Namespace }}"} != 0
+      for: 1m
+      labels:
+        severity: critical
+        alertType: tezos-remote-signer-alert
+    - alert: SignerWiredNetworkLoss
+      annotations:
+        description: 'Remote signer "{{`{{ $labels.tezos_endpoint_name }}`}}" for baker "{{`{{ $labels.tezos_baker_name }}`}}" has lost wired internet connection'
+        summary: 'Tezos remote signer "{{`{{ $labels.tezos_endpoint_name }}`}}" for baker "{{`{{ $labels.tezos_baker_name }}`}}" has lost wired internet connection'
+      expr: wired_network{namespace="{{ .Release.Namespace }}"} != 0
+      for: 1m
+      labels:
+        severity: critical
+        alertType: tezos-remote-signer-alert
+---
+apiVersion: monitoring.coreos.com/v1
+kind: PrometheusRule
+metadata:
+  labels:
+{{- toYaml .Values.prometheusRule.labels | nindent 4 }}
+  name: tezos-remote-signer-reachability-rules
+spec:
+  groups:
+  - name: tezos-remote-signer.rules
+    rules:
+    - alert: NoRemoteSigner
+      annotations:
+        description: 'Remote signer "{{`{{ $labels.tezos_endpoint_name }}`}}" for baker "{{`{{ $labels.tezos_baker_name }}`}}" is down'
+        summary: 'Remote signer "{{`{{ $labels.tezos_endpoint_name }}`}}" for baker "{{`{{ $labels.tezos_baker_name }}`}}" is down or unable to sign.'
+      expr: unhealthy_signers_total{namespace="{{ .Release.Namespace }}"} != 0
+      for: 1m
+      labels:
+        severity: critical
+        alertType: tezos-remote-signer-alert
+---
+{{- end }}
diff --git a/charts/tezos-signer-forwarder/templates/secret.yaml b/charts/tezos-signer-forwarder/templates/secret.yaml
new file mode 100644
index 000000000..b330b7cdb
--- /dev/null
+++ b/charts/tezos-signer-forwarder/templates/secret.yaml
@@ -0,0 +1,7 @@
+apiVersion: v1
+kind: Secret
+metadata:
+  name: tezos-signer-forwarder-secret-{{ .Values.name }}
+data:
+  ssh_host_ecdsa_key: |
+{{ println .Values.secrets.signer_target_host_key | b64enc | indent 4 -}}
diff --git a/charts/tezos-signer-forwarder/templates/service.yaml b/charts/tezos-signer-forwarder/templates/service.yaml
new file mode 100644
index 000000000..32d5f4363
--- /dev/null
+++ b/charts/tezos-signer-forwarder/templates/service.yaml
@@ -0,0 +1,50 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: tezos-remote-signer-ssh-ingress-{{ .Values.name }}
+  annotations:
+{{ toYaml .Values.service_annotations | indent 4 }}
+spec:
+  type: LoadBalancer
+  selector:
+    app.kubernetes.io/name: tezos-signer-forwarder
+  ports:
+{{- range .Values.signers }}
+{{- $name := .name }}
+  # undocumented k8s feature to make a service route to different pods
+  # based on the port - allows to reuse the same public ip in all cloud
+  # providers. For it to work, ports need to have names.
+  # https://github.com/kubernetes/kubernetes/issues/24875#issuecomment-794596576
+{{- range $i, $endpoint := .endpoints }}
+  - port: {{ $endpoint.tunnel_endpoint_port }}
+    name: ssh-{{ trunc 9 $name }}-{{ $i }}
+    targetPort: ssh-{{ trunc 9 $name }}-{{ $i }}
+{{- end }}
+{{- end }}
+  # ensures that remote signers can always ssh
+  publishNotReadyAddresses: true
+{{ if .Values.load_balancer_ip }}
+  loadBalancerIP: {{ .Values.load_balancer_ip }}
+{{ end }}
+---
+{{- range .Values.signers }}
+apiVersion: v1
+kind: Service
+metadata:
+  name: tezos-remote-signer-{{ .name }}
+  labels:
+    app.kubernetes.io/name: tezos-signer-forwarder
+    tezos_baker_name: {{ .name }}
+spec:
+  selector:
+    app.kubernetes.io/name: tezos-signer-forwarder
+    tezos_baker_name: {{ .name }}
+  ports:
+  - port: {{ .signer_port }}
+    name: signer
+  - port: 31732
+    name: metrics
+  # make sure that the service always targets the same signer, when HA is in use.
+  sessionAffinity: ClientIP
+---
+{{- end }}
diff --git a/charts/tezos-signer-forwarder/templates/servicemonitor.yaml b/charts/tezos-signer-forwarder/templates/servicemonitor.yaml
new file mode 100644
index 000000000..759156e09
--- /dev/null
+++ b/charts/tezos-signer-forwarder/templates/servicemonitor.yaml
@@ -0,0 +1,25 @@
+{{- if .Values.serviceMonitor.enabled }}
+{{- range .Values.signers }}
+apiVersion: monitoring.coreos.com/v1
+kind: ServiceMonitor
+metadata:
+  labels:
+    app.kubernetes.io/name: tezos-signer-forwarder
+  name: tezos-remote-signer-monitoring-{{ .name }}
+spec:
+  endpoints:
+  - port: metrics
+    path: /metrics
+    # default scrape timeout of 10 can be too small for remote raspberry pis
+    scrapeTimeout: "20s"
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: tezos-signer-forwarder
+      tezos_baker_name: {{ .name }}
+  targetLabels:
+  - tezos_baker_name
+  podTargetLabels:
+  - tezos_endpoint_name
+---
+{{- end }}
+{{- end }}
diff --git a/charts/tezos-signer-forwarder/templates/statefulset.yaml b/charts/tezos-signer-forwarder/templates/statefulset.yaml
new file mode 100644
index 000000000..84bcef2d5
--- /dev/null
+++ b/charts/tezos-signer-forwarder/templates/statefulset.yaml
@@ -0,0 +1,101 @@
+{{- range .Values.signers }}
+{{- $name := .name }}
+{{- $readiness_probe_path := .readiness_probe_path }}
+{{- $signer_port := .signer_port }}
+{{- $signer_metrics := .signer_metrics }}
+{{- range $i, $endpoint := .endpoints }}
+apiVersion: apps/v1
+kind: StatefulSet
+metadata:
+  name: tezos-signer-forwarder-{{ $name}}-{{ $i }}
+  annotations:
+  {{- with $.Values.stateful_set_annotations }}
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+spec:
+  replicas: 1
+  serviceName: tezos-remote-signer-{{ $name }}
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: tezos-signer-forwarder
+  template:
+    metadata:
+      annotations:
+        # ensure that the pod bounces each time endpoint config changes
+        # https://helm.sh/docs/howto/charts_tips_and_tricks/#automatically-roll-deployments
+        checksum/config: {{ print "$endpoint" | sha256sum }}
+      {{- with $.Values.podAnnotations }}
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      labels:
+        app.kubernetes.io/name: tezos-signer-forwarder
+        tezos_baker_name: {{ $name }}
+        tezos_endpoint_name: {{ $endpoint.alias }}
+    spec:
+      volumes:
+      - name: config-volume
+        configMap:
+           name: tezos-signer-forwarder-config-{{ $name }}-{{ $i }}
+           defaultMode: 0444
+           readOnly: true
+      - name: secret-volume
+        secret:
+           secretName: tezos-signer-forwarder-secret-{{ $.Values.name }}
+           defaultMode: 0400
+           readOnly: true
+      containers:
+      - name: tezos-signer-forwarder
+        image: {{ $.Values.tezos_k8s_images.tezos_signer_forwarder }}
+        imagePullPolicy: IfNotPresent
+        command:
+          - /bin/sh
+        args:
+          - "-c"
+          - |
+{{ tpl ($.Files.Get (print "scripts/entrypoint.sh")) $ | indent 12 }}
+        volumeMounts:
+        - name: config-volume
+          mountPath: /home/signer/.ssh/authorized_keys
+          subPath: authorized_keys
+        - name: secret-volume
+          mountPath: /etc/ssh/ssh_host_ecdsa_key
+          subPath: ssh_host_ecdsa_key
+        env:
+        - name: TUNNEL_ENDPOINT_PORT
+          value: "{{ $endpoint.tunnel_endpoint_port }}"
+        ports:
+        - name: signer
+          containerPort: {{ $signer_port }}
+          protocol: TCP
+        - name: ssh-{{ trunc 9 $name }}-{{ $i }}
+          containerPort: {{ $endpoint.tunnel_endpoint_port }}
+          protocol: TCP
+        readinessProbe:
+          httpGet:
+            path: {{ $readiness_probe_path }}
+            port: {{ $signer_port }}
+          timeoutSeconds: 5
+      - name: prom-exporter
+        image: {{ $.Values.tezos_k8s_images.utils }}
+        ports:
+          - name: metrics
+            containerPort: 31732
+            protocol: TCP
+        env:
+        - name: READINESS_PROBE_PATH
+          value: {{ $readiness_probe_path | quote }}
+        - name: SIGNER_PORT
+          value: {{ $signer_port | quote }}
+        - name: SIGNER_METRICS
+          value: {{ $signer_metrics | quote }}
+        command:
+          - /usr/local/bin/python
+        args:
+          - "-c"
+          - |
+{{ tpl ($.Files.Get (print "scripts/signer_exporter.py")) $ | indent 12 }}
+      nodeSelector:
+ {{ toYaml $.Values.node_selector | indent 8 }}
+---
+{{- end }}
+{{- end }}
diff --git a/charts/tezos-signer-forwarder/values.yaml b/charts/tezos-signer-forwarder/values.yaml
new file mode 100644
index 000000000..55d5bc66a
--- /dev/null
+++ b/charts/tezos-signer-forwarder/values.yaml
@@ -0,0 +1,109 @@
+tezos_k8s_images:
+  utils: ghcr.io/oxheadalpha/tezos-k8s-utils:master
+  tezos_signer_forwarder: ghcr.io/oxheadalpha/tezos-k8s-signerforwarder:dev
+
+# List the endpoints below.
+# Each endpoint represents a ssh server.
+# To handle several endpoints, you can either:
+# * instantiate several replicas of this chart, or
+# * list several endpoints below.
+
+# Since this chart instantiates a service of type Loadbalancer,
+# it may be the case that each such service comes with its own
+# auto-assigned IP, increasing costs.
+# Listing several signers below will put all
+# associated pods behind the same LoadBalancer service.
+# Consequenty, the same IP will be re-used between signers.
+# If you prefer to have one IP per signer, instantiate this chart
+# several times.
+signers:
+  # signer name - to disambiguate them
+- name: mysigner
+
+  # Signer may have several endpoints: signer replicas signing for the same key.
+  # This is useful for a highly-available setup.
+  endpoints:
+    # the public key that the server is expecting.
+    # The signer should authenticate with the corresponding secret key.
+  - ssh_pubkey: "ssh-rsa AAAA...."
+
+    # ssh tunnel connection establishes to this port
+    tunnel_endpoint_port: 50000
+
+    # Alias to distinguish the endpoints from one another
+    alias: "my home signer"
+
+    # Whether to send alerts when down. set to false for cold standbys.
+    alert_when_down: true
+
+  # Set a readiness probe path for your signer.
+  # By default, it is the known path implemented by every signer "/authorized_keys"
+  # When using tezos-remote-signer-os, you can set it to a path that performs more
+  # checks, such as:
+  #  "/statusz/${PUBLIC_BAKING_KEY_HASH}?ledger_url=${LEDGER_AUTHORIZED_PATH_ENCODED}"
+  readiness_probe_path: /authorized_keys
+
+  # The signer port that is being tunneled by the remote signer.
+  # When using HA signer, must be identical for all.
+  signer_port: 6732
+
+  # Whether the remote signer exposes prometheus metrics.
+  # Typically these will be hardware metrics of the signer.
+  # If true, these metrics will be labeled and scraped into
+  # the cluster's prometheus.
+  signer_metrics: false
+
+  # Enter email address to send alerts to.
+  monitoring_email: ""
+
+# Name that goes into the service
+# e.g tezos-signer-mybaker
+# useful when one baker bakes for several addresses
+# on different remote signers.
+name: mybaker
+
+# to deploy in a specific node pool, put label here
+node_selector: {}
+
+# LoadBalancer service annotations. On some cloud providers, it can
+# be used to assign a static ip address.
+service_annotations: {}
+
+
+stateful_set_annotations: {}
+# example: this will cause pulumi to not wait for tunnel to be up
+# pulumi/skipAwait: true
+
+# Load Balancer IP to set the ssh service.
+# In some cloud providers, it is used to assign static ip.
+load_balancer_ip: ""
+
+secrets:
+  # The ssh host key must be passed as input.
+  # Otherwise, when destroying and respinning the infra,
+  # the signer would not recognize the host and refuse to
+  # connect.
+  signer_target_host_key: |
+    -----BEGIN OPENSSH PRIVATE KEY-----
+    xxx
+    -----END OPENSSH PRIVATE KEY-----
+
+# Prometheus Operator is required in your cluster in order to enable
+# serviceMonitor and prometheusRule below.
+# Enable service monitor to scrape the /healthz endpoint of your
+# remote signer.
+# The /healthz endpoint is exposed by tezos-remote-signer-os:
+#    https://github.com/midl-dev/tezos-remote-signer-os
+serviceMonitor:
+  enabled: false
+# Enable Prometheus Rule to be alerted when your hardware remote signer
+# provisioned with tezos-remote-signer-os loses power or wired network
+# connectivity.
+# For rules to be picked up by the Prometheus Operator, proper labels need
+# to be set below. Refer to Prometheus operator documentation for details.
+prometheusRule:
+  enabled: false
+  labels: {}
+alertmanagerConfig:
+  enabled: false
+  labels: {}
diff --git a/signerForwarder/Dockerfile b/signerForwarder/Dockerfile
new file mode 100644
index 000000000..7a873468c
--- /dev/null
+++ b/signerForwarder/Dockerfile
@@ -0,0 +1,25 @@
+FROM alpine:3.18.4
+
+# add openssh and clean
+RUN apk add --no-cache openssh shadow
+
+RUN adduser --system signer
+# * is the hash of the password. Effectively, password login is disabled.
+# but I need to do that otherwise sshd says account is locked. see:
+#  https://unix.stackexchange.com/a/193131/81131
+RUN usermod -p '*' signer
+
+#allow forwarding
+RUN sed -ri 's/^.*GatewayPorts.*$/GatewayPorts yes/g' /etc/ssh/sshd_config
+RUN sed -ri 's/^.*AllowTcpForwarding.*$/AllowTcpForwarding yes/g' /etc/ssh/sshd_config
+RUN sed -ri 's/^.*PasswordAuthentication.*$/PasswordAuthentication no/g' /etc/ssh/sshd_config
+RUN sed -ri 's/^.*ClientAliveInterval.*$/ClientAliveInterval 10/g' /etc/ssh/sshd_config
+RUN sed -ri 's/^.*ClientAliveCountMax.*$/ClientAliveCountMax 2/g' /etc/ssh/sshd_config
+RUN printf "AllowUsers signer\n" >> /etc/ssh/sshd_config
+RUN cat /etc/ssh/sshd_config
+
+RUN mkdir /home/signer/.ssh && chown -R signer /home/signer
+
+# Note that the container must run as root. see
+#  https://superuser.com/a/1548482
+CMD ["/usr/sbin/sshd", "-D", "-e"]