linux - public key is not available: NO_PUBKEY F76221572C52609D

Question

For the below docker file:

FROM microsoft/aspnetcore-build:1.0.1

ENV DOTNET_SKIP_FIRST_TIME_EXPERIENCE 1

# This is FROM openjdk:8-jdk  
RUN apt-get update && apt-get install -y --no-install-recommends 
        bzip2 
        unzip 
        xz-utils 
                apt-transport-https 
    && rm -rf /var/lib/apt/lists/*

RUN echo 'deb http://deb.debian.org/debian jessie-backports main' > /etc/apt/sources.list.d/jessie-backports.list
RUN echo 'deb https://apt.dockerproject.org/repo debian-jessie main' > /etc/apt/sources.list.d/docker.list

# Default to UTF-8 file.encoding
ENV LANG C.UTF-8

# add a simple script that can auto-detect the appropriate JAVA_HOME value
# based on whether the JDK or only the JRE is installed
RUN { 
        echo '#!/bin/sh'; 
        echo 'set -e'; 
        echo; 
        echo 'dirname "$(dirname "$(readlink -f "$(which javac || which java)")")"'; 
    } > /usr/local/bin/docker-java-home 
    && chmod +x /usr/local/bin/docker-java-home

ENV JAVA_HOME /usr/lib/jvm/java-8-openjdk-amd64

ENV JAVA_VERSION 8u111
ENV JAVA_DEBIAN_VERSION 8u111-b14-2~bpo8+1

# see https://bugs.debian.org/775775
# and https://github.com/docker-library/java/issues/19#issuecomment-70546872
ENV CA_CERTIFICATES_JAVA_VERSION 20140324

RUN set -x 
    && apt-get update 
    && apt-get install -y 
        openjdk-8-jdk="$JAVA_DEBIAN_VERSION" 
        ca-certificates-java="$CA_CERTIFICATES_JAVA_VERSION" 
    && rm -rf /var/lib/apt/lists/* 
    && [ "$JAVA_HOME" = "$(docker-java-home)" ]

# see CA_CERTIFICATES_JAVA_VERSION notes above
RUN /var/lib/dpkg/info/ca-certificates-java.postinst configure

##### END OF THE JDK

##### START Jenkins Slave Node Config settings

# Create Jenkins User
RUN useradd jenkins -m -s /bin/bash

RUN chown -R jenkins /home/jenkins
RUN chgrp -R jenkins /home/jenkins
RUN chown -R jenkins /tmp
RUN chgrp -R jenkins /tmp

# Add the jenkins user to sudoers
RUN echo "jenkins    ALL=(ALL)    ALL" >> etc/sudoers

# Must install docker to create docker images from docker container. Inception. Head... hurts.
# container must be called with -v /var/run/docker.sock:/var/run/docker.sock
RUN apt-get install -y --no-install-recommends apt-transport-https ca-certificates
RUN apt-key adv --keyserver hkp://p80.pool.sks-keyservers.net:80 --recv-keys 58118E89F3A912897C070ADBF76221572C52609D
RUN apt-get update && apt-get install -y --no-install-recommends 
    docker-engine 
&& rm -rf /var/lib/apt/lists/*

# This must run after the docker install 
RUN gpasswd -a jenkins docker

USER jenkins

---

build image is failing for command at line #38

RUN set -x 
    && apt-get update 
    && apt-get install -y 
        openjdk-8-jdk="$JAVA_DEBIAN_VERSION" 
        ca-certificates-java="$CA_CERTIFICATES_JAVA_VERSION" 
    && rm -rf /var/lib/apt/lists/* 
    && [ "$JAVA_HOME" = "$(docker-java-home)" ]

---

with error:

W: GPG error: https://apt.dockerproject.org debian-jessie InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY F76221572C52609D

W: There is no public key available for the following key IDs:
AA8E81B4331F7F50
W: Failed to fetch http://deb.debian.org/debian/dists/jessie-backports/main/binary-amd64/Packages

404 Not Found

E: Some index files failed to download. They have been ignored, or old ones used instead.

ERROR: Service 'slavedotnet' failed to build: The command '/bin/sh -c set -x  && apt-get update   && apt-get install -y   openjdk-8-jdk="$JAVA_DEBIAN_VERSION"
  ca-certificates-java="$CA_CERTIFICATES_JAVA_VERSION"    && rm -rf

/var/lib/apt/lists/* && [ "$JAVA_HOME" = "$(docker-java-home)" ]' returned a non-zero code: 100

---

How public key error can get resolved?

Answer 1

There are several issues here:

1) W: GPG error: https://apt.dockerproject.org debian-jessie InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY F76221572C52609D W: There is no public key available for the following key IDs: AA8E81B4331F7F50

Solution:

Move the keyserver add actions to the place before RUN echo 'deb http://deb.debian.org/debian jessie-backports main' > /etc/apt/sources.list.d/jessie-backports.list, meanwhile add AA8E81B4331F7F50 also as next:

RUN apt-get install -y --no-install-recommends apt-transport-https ca-certificates
RUN apt-key adv --keyserver hkp://p80.pool.sks-keyservers.net:80 --recv-keys 58118E89F3A912897C070ADBF76221572C52609D
RUN apt-key adv --keyserver hkp://p80.pool.sks-keyservers.net:80 --recv-keys AA8E81B4331F7F50

2) W: Failed to fetch http://deb.debian.org/debian/dists/jessie-backports/main/binary-amd64/Packages 404 Not Found
E: Some index files failed to download. They have been ignored, or old ones used instead.

Solution:

microsoft/aspnetcore-build:1.0.1 base on debian8, and you want to use openjdk8 which was default not in apt repository. So you use deb http://deb.debian.org/debian jessie-backports main.

Unfortunately, if you check http://ftp.debian.org/debian/dists/, you will find jessie-backports had been removed. So you had to switch to archived url like next (Comment the old url, just use the url next):

#RUN echo 'deb http://deb.debian.org/debian jessie-backports main' > /etc/apt/sources.list.d/jessie-backports.list
RUN echo 'deb http://archive.debian.org/debian jessie-backports main' > /etc/apt/sources.list.d/jessie-backports.list

Meanwhile, you had to add next after doing above to resolve release-file-expired-problem:

RUN echo "Acquire::Check-Valid-Until "false";" > /etc/apt/apt.conf.d/100disablechecks

3) ENV JAVA_VERSION 8u111
ENV JAVA_DEBIAN_VERSION 8u111-b14-2~bpo8+1

Solution:

Not sure how you get this version, but in fact after change to archive jessie backports, what you could get is something like next:

root@2ecaeffec483:/etc/apt# apt-cache policy openjdk-8-jdk
openjdk-8-jdk:
  Installed: (none)
  Candidate: 8u171-b11-1~bpo8+1
  Version table:
     8u171-b11-1~bpo8+1 0
        100 http://archive.debian.org/debian/ jessie-backports/main amd64 Packages

So, you had to change to next:

ENV JAVA_VERSION 8u171
ENV JAVA_DEBIAN_VERSION 8u171-b11-1~bpo8+1