docker中的pg_dump服务器和pg_dump版本不匹配
当我在railsApp容器中运行命令psql --version ，得到了9.4.12 ，当我在postgres容器中运行相同的命令时，得到了9.6.2 。 我怎样才能让版本匹配？
当我尝试在Rails应用程序上执行pg_dump sql导入时，出现以下错误。
pg_dump: server version: 9.6.2; pg_dump version: 9.4.12 pg_dump: aborting because of server version mismatch rails aborted!
这是我的Docker-compose.yml文件：
version: "2.1" services: railsApp: build: context: ./ ports: - "3000:3000" links: - postgres volumes: - .:/app postgres: image: postgres:9.6 ports: - "5432:5432" volumes: - ./.postgres:/var/lib/postgresql
Dockerfile：
FROM ruby:2.3.3 # setup /app as our working directory RUN mkdir /app WORKDIR /app # Replace shell with bash so we can source files RUN rm /bin/sh && ln -s /bin/bash /bin/sh # Set debconf to run non-interactively RUN echo 'debconf debconf/frontend select Noninteractive' | debconf-set-selections # Install base dependencies FROM ruby:2.3.3 # setup /app as our working directory RUN mkdir /app WORKDIR /app # Replace shell with bash so we can source files RUN rm /bin/sh && ln -s /bin/bash /bin/sh # Set debconf to run non-interactively RUN echo 'debconf debconf/frontend select Noninteractive' | debconf-set-selections # Install base dependencies RUN apt-get update && apt-get install -y -q --no-install-recommends \ apt-transport-https \ build-essential \ ca-certificates \ curl \ git \ libssl-dev \ python \ rsync \ software-properties-common \ wget \ postgresql-client \ graphicsmagick \ && rm -rf /var/lib/apt/lists/* # Install node and npm with nvm RUN curl https://raw.githubusercontent.com/creationix/nvm/v0.33.0/install.sh | bash ENV NVM_DIR=/root/.nvm ENV NODE_VERSION v7.2.1 ENV NODE_PATH $NVM_DIR/versions/node/$NODE_VERSION ENV PATH $NODE_PATH/bin:./node_modules/.bin:$PATH RUN source $NVM_DIR/nvm.sh \ && nvm install $NODE_VERSION \ && nvm alias default $NODE_VERSION \ && nvm use default # Install our ruby dependencies ADD Gemfile Gemfile.lock /app/ RUN bundle install # copy the rest of our code over ADD . /app ENV RAILS_ENV development ENV SECRET_KEY_BASE a6bdc5f788624f00b68ff82456d94bf81bb50c2e114b2be19af2e6a9b76f9307b11d05af4093395b0471c4141b3cd638356f888e90080f8ae60710f992beba8f # Expose port 3000 to the Docker host, so we can access it from the outside. EXPOSE 3000 # Set the default command to run our server on port 3000 CMD ["rails", "server", "-p", "3000", "-b", "0.0.0.0"]
最简单的方法是在docker-compose中使用正确的postgres版本。 更改：
postgres: image: postgres:9.6
至：
postgres: image: postgres:9.4.2
所有可用版本在这里 。