build(docker): make Docker deployement compatible with Docker Swarm

I also added a custom script to deploy the services with Docker Swarm.
Without it, Docker cannot read the `.env` file. Since I'm using a
variable to define the registry, the script is required.

3 files changed, 30 insertions, 0 deletions

diff --git a/.env.example b/.env.example
index 4d98551..dbfb664 100644
--- a/.env.example
+++ b/.env.example
@@ -24,6 +24,7 @@ NEXT_PUBLIC_GRAPHQL_API="https://$APP_BACKEND_DOMAIN$APP_GRAPHQL_ENDPOINT"
 #NEXT_PUBLIC_STAGING_GRAPHQL_API="https://$APP_STAGING_BACKEND_DOMAIN$APP_STAGING_GRAPHQL_ENDPOINT"
 
 # Common
+APP_DOCKER_REGISTRY_DOMAIN="127.0.0.1:5000"
 APP_AUTHOR_NAME="Your Name"
 APP_AUTHOR_EMAIL="your@email.com"
 APP_AUTHOR_URL="https://www.yourWebsite.com/"
diff --git a/bin/deploy.sh b/bin/deploy.sh
new file mode 100755
index 0000000..31b8cdb
--- /dev/null
+++ b/bin/deploy.sh
@@ -0,0 +1,27 @@
+#!/usr/bin/env sh
+#
+# deploy.sh
+#
+# Deploy both services using Docker swarm.
+#
+# The registry domain is set in dotenv file but docker stack cannot read it.
+# So a custom deploy script is required to load .env first.
+# See: https://github.com/moby/moby/issues/29133
+
+loadenvs() {
+  set -a && . ./.env && set +a
+}
+
+error() {
+  printf "Error: stack name not defined.\n"
+  printf "Usage: sh deploy.sh your-stack-name\n"
+  exit 1
+}
+
+deploy() {
+  [ $# -ne 1 ] && error
+  loadenvs
+  docker stack deploy -c docker-compose.yml "$1"
+}
+
+deploy "$@"
diff --git a/docker-compose.yml b/docker-compose.yml
index 8d0ad57..791f1ef 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -1,6 +1,7 @@
 version: '3.8'
 services:
   apcom:
+    image: ${APP_DOCKER_REGISTRY_DOMAIN}/apcom
     build:
       context: .
       dockerfile: Dockerfile
@@ -16,6 +17,7 @@ services:
       - '${APP_DOCKER_PORT:-3000}:${APP_DOCKER_PORT:-3000}'
     restart: always
   apcom-staging:
+    image: ${APP_DOCKER_REGISTRY_DOMAIN}/apcom-staging
     build:
       context: .
       dockerfile: Dockerfile