'irida_galaxy' failed to build

After running the command docker-compose up --build -d, I get the following error:
E: The repository 'http://apt.postgresql.org/pub/repos/apt bionic-pgdg Release' does not have a Release file.
ERROR: Service 'irida_galaxy' failed to build: The command '/bin/sh -c apt update && apt install -y netcat-openbsd' returned a non-zero code: 100

I would appreciate any advice on how to resolve this.