Merge branch 'feature/docker' into development

* feature/docker:
  How to build and run the project with Docker in README
  New ENVS to configure Postgres on building docker image and using docker container
  Ignore some files from root user inside the docker container
  Added Dockerfile image from haskell:8.6.5 with dbmate and pgsql, a docker-compose with a daemon entrypoint

.env.default

@@ -1,2 +1,8 @@
+### APP ########################################################################
 DATABASE_URL="postgres://Dandoh:[email protected]:5432/webhaskell?sslmode=disable"
 JWT_SECRET="my_jwt_secret"
+
+### PostgreSQL #################################################################
+POSTGRES_PASSWORD="dandoh"
+POSTGRES_USER="Dandoh"
+POSTGRES_DB="webhaskell"

.gitignore

@@ -1,6 +1,11 @@
 .stack-work/
 li-scraper.cabal
 *~
+## Docker root user files
+.bash_history
+.psql_history
+.stack/
+stack.yaml.lock
 ### Haskell template
 dist
 dist-*
@@ -32,4 +37,4 @@ cabal.project.local~
 linkedin.yaml
 *.jar
 .env
-screenshot.png
+screenshot.png

Dockerfile

@@ -0,0 +1,26 @@
+FROM haskell:8.6.5
+
+### Install PostgreSQL
+RUN echo "deb http://apt.postgresql.org/pub/repos/apt/ stretch-pgdg main" | tee /etc/apt/sources.list.d/pgdg.list
+RUN curl -fsSL https://www.postgresql.org/media/keys/ACCC4CF8.asc | apt-key add -
+RUN apt-get update
+RUN apt-get -y install postgresql-11
+RUN apt-get install libpq-dev
+
+ARG pg_password
+ARG pg_user
+ARG pg_db
+USER postgres
+RUN /etc/init.d/postgresql start && psql --command "CREATE USER $pg_user WITH SUPERUSER PASSWORD '$pg_password';" && createdb -O $pg_user $pg_db
+USER root
+
+### Install dbmate
+RUN curl -fsSL -o /usr/local/bin/dbmate https://github.com/amacneil/dbmate/releases/download/v1.7.0/dbmate-linux-amd64
+RUN chmod +x /usr/local/bin/dbmate
+
+WORKDIR /root/
+
+COPY ./entrypoint.sh /opt/entrypoint.sh
+RUN chmod +x /opt/entrypoint.sh
+ENTRYPOINT ["/opt/entrypoint.sh"]
+

README.md

@@ -56,3 +56,27 @@ This boilerplate wires up:
   ```terminal
   $ stack run
   ```
+
+## Running on Docker
+- Feed in you database & secret in `.env`:
+  ```terminal
+  $ cp .env.default .env
+  ```
+- (Optional) Edit anything you need in the .env file
+- Create and start docker containers
+  ```terminal
+  $ docker-compose up -d
+  ```
+- Enter inside the docker workspace container
+  ```terminal
+  $ docker exec -it web-haskell-graphql-postgres-boilerplate_workspace_1 /bin/bash
+  ```
+- Migrations
+  ```terminal
+  $ dbmate up
+  ```
+- Run webserver
+  ```terminal
+  $ stack run
+  ```
+- Now you can visit: http://localhost:8080/ in your local machine.

docker-compose.yml

@@ -0,0 +1,16 @@
+version: '3.7'
+
+services:
+
+  workspace:
+    build:
+      context: ./
+      dockerfile: Dockerfile
+      args:
+        pg_password: ${POSTGRES_PASSWORD}
+        pg_user: ${POSTGRES_USER}
+        pg_db: ${POSTGRES_DB}
+    volumes:
+      - ./:/root/
+    ports:
+      - 8080:8080

entrypoint.sh

@@ -0,0 +1,27 @@
+#!/usr/bin/env bash
+set -x
+
+pid=0
+
+# SIGTERM-handler
+term_handler() {
+  if [ $pid -ne 0 ]; then
+    kill -SIGTERM "$pid"
+    wait "$pid"
+  fi
+  exit 143; # 128 + 15 -- SIGTERM
+}
+
+# setup handlers
+# on callback, kill the last background process, which is `tail -f /dev/null` and execute the specified handler
+trap 'kill ${!}; term_handler' SIGTERM
+
+# Start PostgreSQL service
+/etc/init.d/postgresql start
+
+# wait forever
+while true
+do
+  tail -f /dev/null & wait ${!}
+done
+