在CircleCI中找不到Pyodbc错误unixODBC驱动程序管理器数据源名称

Question

我正在使用CircleCI作为持续集成管道。当CircleCI运行构建时，它将启动一个包含PostgreSQL数据库的Docker容器，并执行一个Python脚本来尝试连接到该数据库。 Python脚本失败，并显示以下错误：

  

pyodbc.InterfaceError ：（“ IM002”，“ [IM002] [unixODBC] [Driver Manager]数据源名称未找到，并且未指定默认驱动程序（0）（SQLDriverConnect）”）

这是Python脚本：

import pyodbc
conn = 'driver={PostgreSQL Unicode};server=0.0.0.0;port=5432;database=data_quality;pwd=password;uid=postgres;'
connection = pyodbc.connect(conn)
print('Success')

CircleCI VM中的文件 /etc/odbcinst.ini 包含以下配置：

[PostgreSQL ANSI]
Description = ODBC driver for PostgreSQL (ANSI version)
Driver = /usr/lib/x86_64-linux-gnu/odbc/psqlodbca.so
Setup = /usr/lib/x86_64-linux-gnu/odbc/libodbcpsqlS.so
Debug = 0
CommLog = 1

[PostgreSQL Unicode]
Description = ODBC driver for PostgreSQL (Unicode version)
Driver = /usr/lib/x86_64-linux-gnu/odbc/psqlodbcw.so
Setup = /usr/lib/x86_64-linux-gnu/odbc/libodbcpsqlS.so
Debug = 0
CommLog = 1

我很确定问题是由于CircleCI配置引起的，但我不知道为什么。这是CirclCI配置文件 .config.yml

# .circleci/config.yml
version: 2
jobs:

  build:
    machine: true
    steps:
      - checkout

      - run:
          name: Create Docker Compose configuration file
          command: |
            echo "POSTGRES_USER=postgres" >> ./.env
            echo "POSTGRES_PASSWORD=password" >> ./.env
            echo "DATABASE_URL=postgres://postgres:password@db:5432/data_quality" >> ./.env

      - run:
          name: Build Docker images
          command: |
            docker volume create data-quality-db-volume
            docker-compose -f docker-compose.yml -f docker-compose.test.yml up db
            docker ps -a

      - run:
          name: Install Unix ODBC
          command: |
            sudo apt-get update
            sudo apt-get install -y g++ unixodbc-dev

      - run:
          name: Install PostgreSQL ODBC driver
          command: |
            sudo apt-get install -y odbc-postgresql

      - run:
          name: Move ODBC configuration file
          command: |
            sudo cp ./scripts/init/odbcinst.ini /etc
            cat /etc/odbcinst.ini

      - run:
          name: Install Python environment
          command: |
            sudo apt-get install software-properties-common
            sudo add-apt-repository ppa:deadsnakes/ppa
            sudo apt-get update
            sudo apt-get install python3.6
            sudo apt-get install python3-pip

      - run:
          name: Install Python dependencies
          command: |
            sudo pip3 install --upgrade pip
            sudo pip3 install pyodbc
            sudo pip3 install nose2 --ignore-installed six
            sudo pip3 list

      - run:
          name: Test Pyodbc connection to postgreSQL
          command: |
            echo 'export PYTHONPATH=./test:$PYTHONPATH' >> $BASH_ENV
            source $BASH_ENV
            nose2 --plugin nose2.plugins.junitxml --junit-xml -v

      - store_artifacts:
          path: test/junit/test-results.xml
          destination: test-results

      - store_test_results:
          path: test