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docker: use Go version as defined in the package #187

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Oct 15, 2024
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docker: use Go version as defined in the package #187

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docker: use Go version as defined in the package
florianl Oct 14, 2024
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florianl Oct 14, 2024
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20 changes: 12 additions & 8 deletions Dockerfile
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Original file line number Diff line number Diff line change
Expand Up @@ -8,11 +8,20 @@ RUN cross_debian_arch=$(uname -m | sed -e 's/aarch64/amd64/' -e 's/x86_64/arm64
cross_pkg_arch=$(uname -m | sed -e 's/aarch64/x86-64/' -e 's/x86_64/aarch64/'); \
apt-get update -y && \
apt-get dist-upgrade -y && \
apt-get install -y wget make git clang-16 golang unzip \
apt-get install -y wget make git clang-16 unzip libc6-dev g++ gcc pkgconf \
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@florianl florianl Oct 14, 2024 •
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libc6-dev, g++, gcc+ and pkgconf where installed previously by the package golang and are required dependencies for cgo - see https://packages.debian.org/trixie/golang-1.23-go

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Still better do it explicitly to be independent of golang dependencies, which may change in the future. Explicitly naming the packages also serves as a documentation/reference. Also, it doesn't cost extra time when these packages are already installed.

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Oh nevermind, misread your comment.

gcc-${cross_pkg_arch}-linux-gnu libc6-${cross_debian_arch}-cross && \
apt-get clean autoclean && \
apt-get autoremove --yes

COPY go.mod /tmp/go.mod
# Extract Go version from go.mod
RUN GO_VERSION=$(grep -oPm1 '^go \K([[:digit:].]+)' /tmp/go.mod) && \
wget -qO- https://golang.org/dl/go${GO_VERSION}.linux-amd64.tar.gz | tar -C /usr/local -xz
# Set Go environment variables
ENV GOPATH="/agent/go"
ENV GOCACHE="/agent/.cache"
ENV PATH="/usr/local/go/bin:$PATH"

RUN wget -qO- https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh \
| sh -s -- -b $(go env GOPATH)/bin v1.56.2

Expand All @@ -32,12 +41,7 @@ RUN
&& find "$INSTALL_DIR/include" -type f -exec chmod +r {} \; \
&& rm "$PB_FILE"

# The docker image is built as root - make binaries available to user.
RUN mv /root/go/bin/* /usr/local/bin/

ENV GOPATH=/agent/go
ENV GOCACHE=/agent/.cache

RUN echo "export PATH=\"\$PATH:\$(go env GOPATH)/bin\"" >> ~/.bashrc
# Append to /etc/profile for login shells
RUN echo 'export PATH="/usr/local/go/bin:$PATH"' >> /etc/profile
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In the debian docker in via the file /etc/profile the environment variable is overwritten with this approach:

if [ "$(id -u)" -eq 0 ]; then
  PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
else
  PATH="/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games"
fi
export PATH

Appending export PATH ... here makes sure, that the Go executable is available for every user of this docker image.


ENTRYPOINT ["/bin/bash", "-l", "-c"]