Add common variables to common.sh (#49)

Author: dundargoc

ci/common/common.sh

@@ -30,6 +30,9 @@ require_environment_variable BUILD_DIR "${BASH_SOURCE[0]}" ${LINENO}
 CI_TARGET=${CI_TARGET:-$(basename "${0%.sh}")}
 GIT_NAME=${GIT_NAME:-marvim}
 GIT_EMAIL=${GIT_EMAIL:-marvim@users.noreply.github.com}
+DOC_DIR=${DOC_DIR:-${BUILD_DIR}/build/doc}
+DOC_REPO=${DOC_REPO:-neovim/doc}
+DOC_BRANCH=${DOC_BRANCH:-gh-pages}
 
 git_truncate() {
   local branch="${1}"

ci/truncate-history.sh

@@ -7,10 +7,6 @@ source "$BUILD_DIR/ci/common/common.sh"
 
 require_environment_variable BUILD_DIR "${BASH_SOURCE[0]}" ${LINENO}
 
-DOC_DIR=${DOC_DIR:-${BUILD_DIR}/build/doc}
-DOC_REPO=${DOC_REPO:-neovim/doc}
-DOC_BRANCH=${DOC_BRANCH:-gh-pages}
-
 # Trim the https://github.com/neovim/doc/ repository history, else it gets huge
 # and slow to clone.  We don't care about the history of the `gh-pages` branch.
 try_truncate_history() {