E: The repository ' https://download.docker.com/linux/ubuntu jammy InRelease' is not signed.(우분투 docker 설치시 에러)

 

ubuntu docker install error text with whale img generated by AI

W: GPG error: https://download.docker.com/linux/ubuntu jammy InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 7EA0A9C3F273FCD8

우분투에서 Docker 설치할때 아래와 같은 에러가난다면!!!

 

W: https://dl.winehq.org/wine-builds/ubuntu/dists/focal/InRelease: Key is stored in legacy trusted.gpg keyring (/etc/apt/trusted.gpg), see the DEPRECATION section in apt-key(8) for details.
W: GPG error:https://download.docker.com/linux/ubuntu jammy InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 7EA0A9C3F273FCD8
E: The repository ' https://download.docker.com/linux/ubuntu jammy InRelease' is not signed.

 

우선 아래 명령어 실행해봅시다.

 sudo rm -rf /var/lib/apt/lists/*
 sudo apt-get update

 

누구는 성공했다고 하지만 저는 실패했습니다.

 

docker 공식문서 보고 해결했습니다.

1. Set up Docker's apt repository.

   # Add Docker's official GPG key:
   sudo apt-get update
   sudo apt-get install ca-certificates curl
   sudo install -m 0755 -d /etc/apt/keyrings
   sudo curl -fsSL https://download.docker.com/linux/ubuntu/gpg -o /etc/apt/keyrings/docker.asc
   sudo chmod a+r /etc/apt/keyrings/docker.asc
   
   # Add the repository to Apt sources:
   echo \
     "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] https://download.docker.com/linux/ubuntu \
     $(. /etc/os-release && echo "${UBUNTU_CODENAME:-$VERSION_CODENAME}") stable" | \
     sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
   sudo apt-get update

    

2. Install the Docker packages.

   To install the latest version, run:

   $ sudo apt-get install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
   

    

3. Verify that the installation is successful by running the hello-world image:

   $ sudo docker run hello-world
   

This command downloads a test image and runs it in a container. When the container runs, it prints a confirmation message and exits.

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참고: https://docs.docker.com/engine/install/ubuntu/

Ubuntu