I’m trying to build a Flask app using Postgres with Docker. I’d like to connect to an AWS RDS instance of Postgres, but use Docker for my Flask app. However, when trying to set up
psycopg2 it runs into an error because it can’t find
pg_config. Here’s the error:
Building api Step 1/5 : FROM python:3.6.3-alpine3.6 ---> 84c98ca3b5c5 Step 2/5 : WORKDIR /usr/src/app ---> Using cache ---> 407c158f5ee4 Step 3/5 : COPY . . ---> 966df18d329e Step 4/5 : RUN pip install -r requirements.txt ---> Running in 284cc97aeb63 Collecting aniso8601==1.3.0 (from -r requirements.txt (line 1)) Downloading aniso8601-1.3.0.tar.gz (57kB) Collecting click==6.7 (from -r requirements.txt (line 2)) Downloading click-6.7-py2.py3-none-any.whl (71kB) Collecting Flask==0.12.2 (from -r requirements.txt (line 3)) Downloading Flask-0.12.2-py2.py3-none-any.whl (83kB) Collecting Flask-RESTful==0.3.6 (from -r requirements.txt (line 4)) Downloading Flask_RESTful-0.3.6-py2.py3-none-any.whl Collecting Flask-SQLAlchemy==2.3.2 (from -r requirements.txt (line 5)) Downloading Flask_SQLAlchemy-2.3.2-py2.py3-none-any.whl Collecting itsdangerous==0.24 (from -r requirements.txt (line 6)) Downloading itsdangerous-0.24.tar.gz (46kB) Collecting Jinja2==2.9.6 (from -r requirements.txt (line 7)) Downloading Jinja2-2.9.6-py2.py3-none-any.whl (340kB) Collecting MarkupSafe==1.0 (from -r requirements.txt (line 8)) Downloading MarkupSafe-1.0.tar.gz Collecting psycopg2==220.127.116.11 (from -r requirements.txt (line 9)) Downloading psycopg2-18.104.22.168.tar.gz (425kB) Complete output from command python setup.py egg_info: running egg_info creating pip-egg-info/psycopg2.egg-info writing pip-egg-info/psycopg2.egg-info/PKG-INFO writing dependency_links to pip-egg-info/psycopg2.egg-info/dependency_links.txt writing top-level names to pip-egg-info/psycopg2.egg-info/top_level.txt writing manifest file 'pip-egg-info/psycopg2.egg-info/SOURCES.txt' Error: pg_config executable not found. Please add the directory containing pg_config to the PATH or specify the full executable path with the option: python setup.py build_ext --pg-config /path/to/pg_config build ... or with the pg_config option in 'setup.cfg'. ---------------------------------------- Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-build-01lf5grh/psycopg2/ ERROR: Service 'api' failed to build: The command '/bin/sh -c pip install -r requirements.txt' returned a non-zero code: 1
FROM python:3.6.3-alpine3.6 WORKDIR /usr/src/app COPY . . RUN pip install -r requirements.txt CMD ["python", "app.py"]
Many others seem to have a similar issue locally, but none of them involve using Docker. This seems like a Docker issue because I can set up a local virtual environment and the setup works just fine since I have Postgres installed locally and it’s able to find my local
It appears that during the container build/setup, Docker is trying to find
pg_config within the container. Is there a way to install a
pg_config in the container, even though I won’t be using a containerized instance of Postgres, but rather the instance on RDS?
Any and all suggestions on how to get around this are welcomed.