Merge pull request #41 from canonical/eaudetcobello/patch-install-go

get go from go.dev/dl in Dockerfile

use a less error-prone approach to  getting the archive of a go version

templates/docker/Dockerfile

@@ -44,7 +44,7 @@ RUN apt-get update \
 ## NOTE(neoaggelos): Go version used to build components
 ## !!!IMPORTANT!!! Keep up to date with "snapcraft.yaml:parts.build-deps.build-snaps.go"
 ADD install-go.sh /
-RUN /install-go.sh 1.22 && ln -s /usr/local/go/bin/go /usr/local/bin/go
+RUN /install-go.sh 1.22.6 && ln -s /usr/local/go/bin/go /usr/local/bin/go
 
 ## Prepare build environment
 ENV SNAPCRAFT_PART_INSTALL=/out

templates/docker/install-go.sh

@@ -3,13 +3,13 @@
 # Author: Angelos Kolaitis <[email protected]>
 #
 # Usage:
-#    $ install-go.sh 1.22
+#    $ install-go.sh 1.22.6
 #
-# Description: Download latest go version and install under /usr/local/go
+# Description: Download go version and install under /usr/local/go
 
 VERSION="$1"
 
-fname="$(curl -s https://go.dev/dl/ | grep -o "go$VERSION.*.linux-amd64.tar.gz" | head -1)"
-wget "https://go.dev/dl/$fname"
-tar -C /usr/local -xvzf "$fname"
-rm "$fname"
+fname="go${VERSION}.linux-amd64.tar.gz"
+wget "https://go.dev/dl/${fname}"
+tar -C /usr/local -xvzf "${fname}"
+rm "${fname}"