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Dockerfile.vendor: update GOPROXY to use default with fallback 

Use the default proxy, to assist with vanity domains mis-behaving, but keep
a fallback for situations where we need to get modules from GitHub directly.

This should hopefully help with the gopkg.in/yaml.v2 domain often going AWOL;

    #14 245.9 	gopkg.in/yaml.v2@v2.4.0: unrecognized import path "gopkg.in/yaml.v2": reading https://gopkg.in/yaml.v2?go-get=1: 502 Bad Gateway
    #14 245.9 	server response: Cannot obtain refs from GitHub: cannot talk to GitHub: Get https://github.com/go-yaml/yaml.git/info/refs?service=git-upload-pack: write tcp 10.131.9.188:60820->140.82.121.3:443: write: broken pipe

    curl 'https://gopkg.in/yaml.v2?go-get=1'
    Cannot obtain refs from GitHub: cannot talk to GitHub: Get https://github.com/go-yaml/yaml.git/info/refs?service=git-upload-pack: write tcp 10.131.9.188:60820->140.82.121.3:443: write: broken pipe

From the Go documentation; https://go.dev/ref/mod#goproxy-protocol

> List elements may be separated by commas (,) or pipes (|), which determine error
> fallback behavior. When a URL is followed by a comma, the go command falls back
> to later sources only after a 404 (Not Found) or 410 (Gone) response. When a URL
> is followed by a pipe, the go command falls back to later sources after any error,
> including non-HTTP errors such as timeouts. This error handling behavior lets a
> proxy act as a gatekeeper for unknown modules. For example, a proxy could respond
> with error 403 (Forbidden) for modules not on an approved list (see Private proxy
> serving private modules).

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
(cherry picked from commit 6458dcbe51)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This commit is contained in:
Sebastiaan van Stijn 2023-06-02 13:12:35 +02:00
parent 90c59dcdf4
commit e7f7256b25
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dockerfiles/Dockerfile.vendor
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@ -9,7 +9,7 @@ RUN apk add --no-cache bash git rsync
WORKDIR /src WORKDIR /src
FROM base AS vendored FROM base AS vendored
ENV GOPROXY=direct ENV GOPROXY=https://proxy.golang.org|direct
RUN --mount=target=/context \ RUN --mount=target=/context \
--mount=target=.,type=tmpfs \ --mount=target=.,type=tmpfs \
--mount=target=/go/pkg/mod,type=cache <<EOT --mount=target=/go/pkg/mod,type=cache <<EOT