Change path to git executable for Discourse Docker install

Installation
1

Hi all,

Thanks for the great forum app! Please forgive me as a newbie to both Docker and Discourse, if it is a trivial question. System: Ubuntu LTS 20.04

Short: is there any way to use git installed somewhere other than /usr/bin?

Long: I have manually installed a new version of git (2.31.1) in /usr/local (to get rid of link to libgnutls and the gnutls_handshake() error) and have added /usr/local/bin to PATH. In the launcher, I added echo $PATH && which git before cd /pups/ in run_command, and Running ./launcher rebuild app gives

/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin/:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin
/usr/bin/git

Does this mean that all following git actions are actually using /usr/bin/git? In that case, I would rather expect git to be found at /usr/local/bin.

In fact, I do not remember installing git in /usr by apt-get or some other way. So I think it is associated to the way Docker works, is there any way to customize it?

Thanks again!
minye

2

Hi all,

For any one who happens to be here, I managed to do it by building a new image, tagged newgit, from the Discourse official base image, and then installing Discourse upon that by modifying the image variable in launcher.

The main instructions in the Dockerfile are as followed. All dependencies (perl, gcc, etc) are handled by the base image.

# install a git free of gnutls
RUN cd / && \
    vcurl=7.68.0 && wget http://dl.uxnr.de/mirror/curl/curl-$vcurl.tar.gz && \
    vssl=1.1.1f && wget http://www.openssl.org/source/openssl-$vssl.tar.gz && \
    vgit=2.31.1 && wget http://mirrors.edge.kernel.org/pub/software/scm/git/git-$vgit.tar.gz && \
    tar -zxf curl-$vcurl.tar.gz && tar -zxf openssl-$vssl.tar.gz && \
    tar -zxf git-$vgit.tar.gz && \
    cd openssl-$vssl && ./config --prefix=/usr/local && make && make install && cd .. && \
    cd curl-$vcurl && ./configure --with-ssl=/usr/local --prefix=/usr/local --without-gnutls --disable-ldap --without-librtmp && make && make install && cd .. && \
    cd git-$vgit && make configure && ./configure --prefix=/usr/local --with-openssl=/usr/local --with-curl=/usr/local && make && make install && cd ../ && \
    rm -rf /curl-${vurl}* /openssl-${vssl}* /git-${vgit}*
# check git install
RUN which git && git version && (ldd -v /usr/local/libexec/git-core/git-remote-https | grep gnutls) || echo "Git is not linked to libgnutls"

and gives /usr/local/bin/git.

I am aware that this be a dirty hack and not recommended by the dev team. I put it here only as a reference from a Docker layman, in case that someone had a similar demand.