rake db:create throws “database does not exist” error with postgresql

Question

I\'m using rails 4.1.5 with postgresql 9.1 under Debian 7, and I\'m not able to create a database in my development environment. When I run

bin/rake db:create
         


        

Answer 1

Here is my Dockerfile for the rails project. Take a look at this part:

CMD mkdir -p tmp/pids && \
    bundle exec rake db:create && \
    bundle exec rails db:migrate && \
    bundle exec rake db:seed && \
    bundle exec puma -C config/puma.rb

Bundler 2.1.4, ruby 2.7.2, rails 6.0.3 compatible. Docker compose part:

server:
    container_name: server
    build:
      context: Server
      dockerfile: Dockerfile
      args:
        ENV: 'development'
    restart: unless-stopped
    depends_on:
      - db
    env_file:
      - ./Server/.env
    ports:
      - '9090:3000'
    volumes:
      - ./Server:/app
      - ./Server/Docker/usr/.gemrc:/root/.gemrc
    networks:
      - app-network

FROM ruby:2.7.2-alpine3.12

# env and arg variables setup
ARG APP_HOME='/app'
ARG ENV
ENV RAILS_ENV=$ENV \
    RACK_ENV=$ENV \
    RAILS_ROOT=$APP_HOME

# timezone setup
RUN apk add --update tzdata && \
    cp /usr/share/zoneinfo/Europe/London /etc/localtime && \
    echo "Europe/London" > /etc/timezone

# building in tmp dir
WORKDIR /tmp
ADD Gemfile ./

#install dependencies (bundler 2.1.4, ruby 2.7.2, rails 6.0.3 compatible) 
RUN apk add --update --virtual runtime-deps postgresql-client nodejs libffi-dev readline sqlite xz && \
    apk add --virtual build-deps build-base openssl postgresql-dev libc-dev linux-headers libxml2-dev libxslt-dev readline-dev && \
    gem install bundler -v 2.1.4 && \
    bundle install --jobs=4 && \
    apk del build-deps

# /app
WORKDIR $APP_HOME

# create dbs if no such, migrate, seed, start
CMD mkdir -p tmp/pids && \
    bundle exec rake db:create && \
    bundle exec rails db:migrate && \
    bundle exec rake db:seed && \
    bundle exec puma -C config/puma.rb