From 8c697e53be2ec2964f11f151f773d98b1353ee80 Mon Sep 17 00:00:00 2001
From: computeronix <19168174+computeronix@users.noreply.github.com>
Date: Wed, 28 Jul 2021 14:03:36 -0400
Subject: [PATCH] Fix Docker TGS to PNG

when attempting to convert TGS to PNG it errors, the below  PR fixes it

resolves: https://github.com/42wim/matterbridge/issues/1515
---
 Dockerfile | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Dockerfile b/Dockerfile
index 82673d81..b81b3aee 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -6,7 +6,8 @@ RUN apk --no-cache add go git \
         && go build -mod vendor -ldflags "-X main.githash=$(git log --pretty=format:'%h' -n 1)" -o /bin/matterbridge
 
 FROM alpine
-RUN apk --no-cache add ca-certificates mailcap
+RUN apk --no-cache add ca-certificates mailcap python3-dev py3-pip build-base cairo-dev cairo cairo-tools jpeg-dev zlib-dev freetype-dev lcms2-dev openjpeg-dev tiff-dev tk-dev tcl-dev \
+        && pip3 install wheel lottie cairosvg
 COPY --from=builder /bin/matterbridge /bin/matterbridge
 RUN mkdir /etc/matterbridge \
   && touch /etc/matterbridge/matterbridge.toml \