diff --git a/Dockerfile b/Dockerfile
index 82c0f6e..d275386 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,7 @@
 FROM golang:alpine as builder
 
+ENV VERSION=120ae016a68c4b65cf443c9577c4d1741e34c8d0
+
 RUN apk --no-cache add \
     git \
     gcc \
@@ -8,6 +10,7 @@ RUN apk --no-cache add \
 WORKDIR /build
 RUN git clone https://github.com/tulir/mautrix-whatsapp.git
 WORKDIR /build/mautrix-whatsapp
+RUN git checkout $VERSION
 
 RUN go get
 RUN go build -o /build/bin/mautrix-whatsapp
diff --git a/README.md b/README.md
index 805ae74..4b44fad 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,5 @@
-[whatsapp bridge](https://github.com/tulir/mautrix-whatsapp) for the [matrix](http://matrix.org/) network.
+[whatsapp bridge](https://github.com/tulir/mautrix-whatsapp)
+for the [matrix](http://matrix.org/) network.
 
 # Volumes
 - `/var/lib/matrix-bridge/data`
@@ -19,5 +20,8 @@ Homeserver token (from the generated registration)
 ## ADMIN_USER
 Matrix id of the admin user.
 
+## DATABASE_DATASOURCE
+Postgre datasource url
+
 # Ports
 - 8080
diff --git a/rootfs/etc/confd/templates/config.yaml.tmpl b/rootfs/etc/confd/templates/config.yaml.tmpl
index 3d495ff..148d340 100644
--- a/rootfs/etc/confd/templates/config.yaml.tmpl
+++ b/rootfs/etc/confd/templates/config.yaml.tmpl
@@ -18,9 +18,9 @@ appservice:
   # Database config.
   database:
     # The database type. Only "sqlite3" is supported.
-    type: sqlite3
+    type: postgres
     # The database URI. Usually file name. https://github.com/mattn/go-sqlite3#connection-string
-    uri: /var/lib/matrix-bridge/data/mautrix-whatsapp.db
+    uri: {{ DATABASE_DATASOURCE }}
   # Path to the Matrix room state store.
   state_store_path: /var/lib/matrix-bridge/data/mx-state.json