ERROR: http://dl-4.alpinelinux.org/alpine/edge/testing: UNTRUSTED signature

Question

I am new to this, but I enherited a project, where runtime build is created with dockerfile and commands like this:

# Build runtime image

FROM microsoft/dotnet:2.2-aspnetcore-runtime-alpine

RUN echo "http://dl-4.alpinelinux.org/alpine/edge/testing" >> /etc/apk/repositories;

RUN apk update && apk add libgdiplus

RUN apk add --no-cache icu-libs

The gitlab pipeline shows this:

Step 15/20 : RUN apk update && apk add libgdiplus

96 ---> Running in 95f8ebccb602

97fetch http://dl-cdn.alpinelinux.org/alpine/v3.10/main/x86_64/APKINDEX.tar.gz

98fetch http://dl-cdn.alpinelinux.org/alpine/v3.10/community/x86_64/APKINDEX.tar.gz

99fetch http://dl-4.alpinelinux.org/alpine/edge/testing/x86_64/APKINDEX.tar.gz

100ERROR: http://dl-4.alpinelinux.org/alpine/edge/testing: UNTRUSTED signature

101WARNING: Ignoring APKINDEX.24c95890.tar.gz: No such file or directory

102v3.10.9-43-g3feb769ea3 [http://dl-cdn.alpinelinux.org/alpine/v3.10/main]

103v3.10.6-10-ged79a86de3 [http://dl-cdn.alpinelinux.org/alpine/v3.10/community]

1041 errors; 10355 distinct packages available

105Service 'api' failed to build: The command '/bin/sh -c apk update && apk add libgdiplus' returned a non-zero code: 1

I know that the keys have been rotated and I have to upgrade alpine somehow, but adding RUN upgrade , or RUN apk add -X https://dl-cdn.alpinelinux.org/alpine/v3.16/main -u alpine-keys doesn't change anything. Can someone please tell me what do I need to do?

Answer 1

Yes, we have come across this problem and it is because alpine linux edge signing keys rotated ( link , according to this official announcement). You have to execute this command inside the Dockerfile .

apk add -X https://dl-cdn.alpinelinux.org/alpine/v3.16/main -u alpine-keys

Another way is to upgrade the base image, in your case the microsoft/dotnet:2.2-aspnetcore-runtime-alpine , to a newer version.

Answer 2

SOLVED - You need to add --allow-untrusted

RUN apk add -X https://nl.alpinelinux.org/alpine/edge/main -u alpine-keys --allow-untrusted

RUN echo "@edge http://nl.alpinelinux.org/alpine/edge/main" >> /etc/apk/repositories
RUN apk update