use cpanfile to install dependencies, run worker in another docker container

.dockerignore

@@ -1,6 +1,5 @@
 Dockerfile
 .dockerignore
-examples/
 .gitignore
 README.md
 travelynx.conf

Dockerfile

@@ -2,28 +2,16 @@ FROM debian:stretch-slim
 
 ARG DEBIAN_FRONTEND=noninteractive
 
+COPY cpanfile /app/cpanfile
+WORKDIR /app
+
 RUN apt-get update && apt-get install --no-install-recommends -y \
 	cpanminus \
 	build-essential \
 	libpq-dev \
 	git \
-	ssmtp \
-	&& cpanm -in --no-man-pages \
-	Cache::File \
-	Crypt::Eksblowfish \
-	DateTime \
-	DateTime::Format::Strptime \
-	DBI \
-	DBD::Pg \
-	Email::Sender \
-	Geo::Distance \
-	Geo::Distance::XS \
-	Mojolicious \
-	Mojolicious::Plugin::Authentication \
-	Travel::Status::DE::IRIS \
-	UUID::Tiny \
-	JSON \
-	Mojo::Pg \
+	cron \
+	&& cpanm -in --no-man-pages --installdeps . \
 	&& rm -rf ~/.cpanm \
 	&& apt-get purge -y \
 	build-essential \
@@ -31,6 +19,5 @@ RUN apt-get update && apt-get install --no-install-recommends -y \
 	&& apt-get autoremove -y
 
 COPY . /app
-WORKDIR /app
 
 CMD ["/app/docker-run.sh"]

docker-compose.yml

@@ -4,6 +4,17 @@ x-common-env: &common-env
   TRAVELYNX_DB_NAME: travelynx
   TRAVELYNX_DB_USERNAME: travelynx
   TRAVELYNX_DB_PASSWORD: travelynx
+  TRAVELYNX_SECRET: 12345678
+  TRAVELYNX_MAIL_DISABLE: 1
+  MOJO_MODE: development
+
+x-common-config: &common-config
+  volumes:
+    - ./examples/docker/travelynx.conf:/app/travelynx.conf
+  build: .
+  networks:
+    - backend
+  
 services:
   database:
     image: postgres:11
@@ -14,16 +25,16 @@ services:
     volumes:
       - ./examples/docker/postgres-init.sh:/docker-entrypoint-initdb.d/init.sh
   travelynx:
-    build: .
+    <<: *common-config
     ports:
       - "8000:8093"
-    networks:
-      - backend
-    volumes:
-      - ./examples/docker/travelynx.conf:/app/travelynx.conf
     environment:
       <<: *common-env
-      TRAVELYNX_MAIL_DISABLE: 1
-      TRAVELYNX_SECRET: 12345678
+  cron:
+    <<: *common-config
+    environment:
+      <<: *common-env
+      CRON: 1
+
 networks:
   backend:

docker-run.sh

@@ -4,6 +4,14 @@ set -eu
 WAIT_DB_HOST=${TRAVELYNX_DB_HOST}
 WAIT_DB_PORT=5432
 
+check_config() {
+	if [ ! -f travelynx.conf ]
+	then
+		echo "The configuration file is missing"
+		exit 1
+	fi	
+}
+
 wait_for_db() {
 	set +e
 	for i in $(seq 1 ${WAIT_DB_TIMEOUT:-5})
@@ -11,30 +19,40 @@ wait_for_db() {
 		(echo >/dev/tcp/${WAIT_DB_HOST}/${WAIT_DB_PORT}) &>/dev/null
 		if [ $? -eq 0 ]; then
 		    break
+		else
+			echo "Can't reach DB @ ${WAIT_DB_HOST}:${WAIT_DB_PORT}"
 		fi
 		sleep 1
 	done
 	set -e
 }
 
-if [ ! -f travelynx.conf ]
-then
-	echo "The configuration file is missing"
-	exit 1
-fi
-
-if [ \
+run_app() {
+	if [ \
 		"${TRAVELYNX_MAIL_DISABLE:-0}" -eq 0 \
 		-a "${TRAVELYNX_MAIL_HOST:-unset}" != "unset" \
-]
-then
+	]
+	then
 		export EMAIL_SENDER_TRANSPORT=SMTP
 		export EMAIL_SENDER_TRANSPORT_HOST=${TRAVELYNX_MAIL_HOST}
 		export EMAIL_SENDER_TRANSPORT_PORT=${TRAVELYNX_MAIL_PORT:-25}
-fi
+	fi
 
+	perl index.pl database migrate
+
+	exec /usr/local/bin/hypnotoad -f index.pl
+}
+
+run_cron() {
+	exec perl index.pl worker
+}
+
+check_config
 wait_for_db
 
-perl index.pl database migrate
+if [ "${CRON:-0}" -ne "0" ]
+then
+	run_cron
+fi
 
-exec /usr/local/bin/hypnotoad -f index.pl
+run_app