initial docker-compose based CI

.circleci/config.yml

@@ -22,16 +22,17 @@ jobs:
   test:
     docker:
       - image: docker:stable-git
-    working_directory: ~/code
+    working_directory: /code
     steps:
+      - checkout
       - setup_remote_docker
       - run:
           name: Pull and run a docker container
           command: |
-            DOCKER_TAG=$(echo paper_trail:${CIRCLE_BRANCH} | tr '/' '_')
-            docker pull ${HUB_USERNAME}/${DOCKER_TAG}
-            docker run -t -d --name="paper_trail" ${HUB_USERNAME}/${DOCKER_TAG} /bin/sh
-      - run: docker exec -it paper_trail mix test
+            apk add docker-compose
+            sed -i $(echo "s/\$CIRCLE_BRANCH/$CIRCLE_BRANCH/g") /code/.env
+            docker-compose up -d
+      - run: docker-compose exec -T backend mix test --trace
 
 workflows:
   version: 2

.env

@@ -0,0 +1,8 @@
+POSTGRES_USER=postgres
+POSTGRES_PASSWORD=postgres
+POSTGRES_HOST=localhost
+# PG_HOST=localhost
+MIX_ENV=test
+# CIRCLE_BRANCH=$$(if [ -v CIRCLE_BRANCH ]; then echo master; else git branch --no-color 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/\1/'; fi)
+CIRCLE_BRANCH=$CIRCLE_BRANCH
+DOCKER_TAG=$(echo paper_trail:${CIRCLE_BRANCH} | tr '/' '_')

Dockerfile

@@ -2,6 +2,7 @@ FROM "elixir:1.10.1-alpine"
 
 WORKDIR /code/
 
+RUN apk add postgresql
 RUN mix local.hex --force && mix local.rebar --force
 
 COPY ["mix.lock", "mix.exs", "/code/"]

config/test.exs

@@ -9,13 +9,13 @@ config :paper_trail, PaperTrail.Repo,
   username: System.get_env("POSTGRES_USER"),
   password: System.get_env("POSTGRES_PASSWORD"),
   database: "paper_trail_test",
-  hostname: System.get_env("POSTGRES_HOST"),
+  hostname: System.get_env("PGHOST"),
   poolsize: 10
 
 config :paper_trail, PaperTrail.UUIDRepo,
   adapter: Ecto.Adapters.Postgres,
   username: System.get_env("POSTGRES_USER"),
   password: System.get_env("POSTGRES_PASSWORD"),
   database: "paper_trail_uuid_test",
-  hostname: System.get_env("POSTGRES_HOST"),
+  hostname: System.get_env("PGHOST"),
   poolsize: 10

docker-compose.yaml

@@ -1,42 +1,40 @@
-version: '3.2'
+version: '3.4'
 services:
   db:
     image: postgres:12.2-alpine
     environment:
-      POSTGRES_PASSWORD: $PGUSER
-      POSTGRES_USER: $PGPASSWORD
+      POSTGRES_PASSWORD: $POSTGRES_USER
+      POSTGRES_USER: $POSTGRES_PASSWORD
       PGDATA: /var/lib/postgresql/data/pgdata
     restart: always
     networks:
       - backend_network
     volumes:
       - pgdata:/var/lib/postgresql/data
   backend:
-    image: $BACKEND_IMAGE_NAME
+    image: inakri/paper_trail:$CIRCLE_BRANCH
     build:
       context: .
-      dockerfile: $BACKEND_DOCKERFILE
-      cache_from:
-        - $BASE_IMAGE
-        - $BACKEND_IMAGE_CACHE
+      dockerfile: Dockerfile
     environment:
-      PGUSER: $PGUSER
-      PGPASSWORD: $PGPASSWORD
-      PGPORT: $PGPORT
+      POSTGRES_USER: $POSTGRES_USER
+      POSTGRES_PASSWORD: $POSTGRES_PASSWORD
+      PGPORT: 5432
       PGHOST: db
       MIX_ENV: $MIX_ENV
     tty: true
-    ports:
-      - "4000:4000"
     depends_on:
       - db
     networks:
       - backend_network
-    command: $BACKEND_COMMAND
+    command: ["./setup-database.sh"]
 
 volumes:
   pgdata:
 networks:
   backend_network:
     driver: bridge
 
+# cache_from:
+#   - $BASE_IMAGE
+#   - $BACKEND_IMAGE_CACHE

setup-database.sh

@@ -0,0 +1,24 @@
+#!/bin/sh
+set -e
+
+# Prepare Dialyzer if the project has Dialyxer set up
+# if mix help dialyzer >/dev/null 2>&1
+# then
+#   echo "\nFound Dialyxer: Setting up PLT..."
+#   mix do deps.compile, dialyzer --plt
+# else
+#   echo "\nNo Dialyxer config: Skipping setup..."
+# fi
+
+# Wait for Postgres to become available.
+until psql -h $PG_HOST -U "$POSTGRES_USER" -c '\q' 2>/dev/null; do
+  >&2 echo "Postgres is unavailable - sleeping"
+  sleep 1
+done
+
+echo "\nPostgres is available: continuing with database setup..."
+
+mix ecto.create
+# mix ecto.migrate
+
+# echo "\nPostgres migrations finished..."