Update

- Updated .travis.yml for multiarch support
- Applied small code optimizations

.travis.yml

@@ -1,27 +1,36 @@
-language: php
-
-php:
-  - '7.4'
-
+---
 notifications:
   email:
   - team@appwrite.io
-  
-services:
-- docker
+
+language: minimal
+
+arch:
+  - amd64
+  - arm64
+  - ppc64le
+  - s390x
+
+os: linux
+
+before_install:
+  - curl -fsSL https://get.docker.com | sh
+  - echo '{"experimental":"enabled"}' | sudo tee /etc/docker/daemon.json
+  - mkdir -p $HOME/.docker
+  - echo '{"experimental":"enabled"}' | sudo tee $HOME/.docker/config.json
+  - sudo service docker start
 
 install:
-- docker-compose up -d
-- sleep 10
-- docker-compose logs smtp
+  - docker-compose up -d
 
 script:
-- docker ps
-- >
-  if : >/dev/tcp/localhost/25; then
-    echo 'Internet available.'
-    exit 0
-  else
-    echo 'Offline.'
-    exit 1
-  fi
+  - docker ps -a
+  - docker-compose logs smtp
+  - >
+    if : >/dev/tcp/localhost/25; then
+      echo 'Connection available.'
+      travis_terminate 0
+    else
+      echo 'Connection unavailable.'
+      travis_terminate 1
+    fi

Dockerfile

@@ -2,7 +2,10 @@ FROM alpine:3.12
 
 LABEL maintainer="team@appwrite.io"
 
-RUN apk add --no-cache exim
+RUN \
+    apk add --no-cache \
+        exim && \
+    rm -rf /var/cache/apk/*
 
 COPY exim.conf /etc/exim/exim.conf
 

docker-compose.yml

@@ -1,3 +1,4 @@
+---
 version: '3'
 
 services: