diff --git a/app/build/alps/Dockerfile b/app/build/alps/Dockerfile
new file mode 100644
index 0000000..647d90d
--- /dev/null
+++ b/app/build/alps/Dockerfile
@@ -0,0 +1,21 @@
+FROM golang:1.15.6-buster as builder
+
+ARG VERSION
+
+ENV CGO_ENABLED=0 GOOS=linux GOARCH=amd64
+WORKDIR /tmp/alps
+
+RUN git init && \
+    git remote add origin https://git.sr.ht/~migadu/alps && \
+    git fetch --depth 1 origin ${VERSION} && \
+    git checkout FETCH_HEAD
+
+COPY skipverify.patch skipverify.patch
+
+RUN git apply skipverify.patch && \
+    go build -a -o /usr/local/bin/alps ./cmd/alps
+
+FROM scratch
+COPY --from=builder /usr/local/bin/alps /alps
+COPY --from=builder /tmp/alps/themes /themes
+ENTRYPOINT ["/alps"]
diff --git a/app/build/alps/skipverify.patch b/app/build/alps/skipverify.patch
new file mode 100644
index 0000000..14e14cb
--- /dev/null
+++ b/app/build/alps/skipverify.patch
@@ -0,0 +1,55 @@
+From 47765c10f1af2013556f76dc63dfa056167ae5e8 Mon Sep 17 00:00:00 2001
+From: Quentin <quentin@deuxfleurs.fr>
+Date: Fri, 4 Dec 2020 13:19:24 +0100
+Subject: [PATCH] Skip CA verification
+
+---
+ imap.go | 3 ++-
+ smtp.go | 3 ++-
+ 2 files changed, 4 insertions(+), 2 deletions(-)
+
+diff --git a/imap.go b/imap.go
+index 7554331..1a4931d 100644
+--- a/imap.go
++++ b/imap.go
+@@ -3,6 +3,7 @@ package alps
+ import (
+ 	"fmt"
+ 
++	"crypto/tls"
+ 	"github.com/emersion/go-imap"
+ 	imapclient "github.com/emersion/go-imap/client"
+ 	"github.com/emersion/go-message/charset"
+@@ -16,7 +17,7 @@ func (s *Server) dialIMAP() (*imapclient.Client, error) {
+ 	var c *imapclient.Client
+ 	var err error
+ 	if s.imap.tls {
+-		c, err = imapclient.DialTLS(s.imap.host, nil)
++		c, err = imapclient.DialTLS(s.imap.host, &tls.Config{InsecureSkipVerify: true})
+ 		if err != nil {
+ 			return nil, fmt.Errorf("failed to connect to IMAPS server: %v", err)
+ 		}
+diff --git a/smtp.go b/smtp.go
+index 5e178f2..8d22f1d 100644
+--- a/smtp.go
++++ b/smtp.go
+@@ -3,6 +3,7 @@ package alps
+ import (
+ 	"fmt"
+ 
++	"crypto/tls"
+ 	"github.com/emersion/go-smtp"
+ )
+ 
+@@ -14,7 +15,7 @@ func (s *Server) dialSMTP() (*smtp.Client, error) {
+ 	var c *smtp.Client
+ 	var err error
+ 	if s.smtp.tls {
+-		c, err = smtp.DialTLS(s.smtp.host, nil)
++		c, err = smtp.DialTLS(s.smtp.host, &tls.Config{InsecureSkipVerify: true})
+ 		if err != nil {
+ 			return nil, fmt.Errorf("failed to connect to SMTPS server: %v", err)
+ 		}
+-- 
+2.28.0
+
diff --git a/app/build/docker-compose.yml b/app/build/docker-compose.yml
index 0b142c1..5e28b99 100644
--- a/app/build/docker-compose.yml
+++ b/app/build/docker-compose.yml
@@ -34,6 +34,13 @@ services:
         VERSION: 5.0.0
     image: superboum/amd64_sogo:v7
 
+  alps:
+    build:
+      context: ./alps
+      args:
+        VERSION: 5cef0aaff2b8b6ee3e00b566123517e241d8cfb8
+    image: superboum/amd64_alps:v1
+
   # VoIP
   jitsi-meet:
     build: