Try to build :latest using docker-dind

scripts/semver.sh

@@ -0,0 +1,83 @@
+#!/bin/bash -eu
+
+# This script prints out git metadata information for a given commit (or head by default)
+# It assumes tags of the form `v1.2.3`, and will print prerelease versions when
+# not on an exact tag.
+#
+# It is intended to be used like so:
+#
+#   cd <some-git-repo>
+#   $(../semver-from-git.sh)
+#
+# or
+#
+#    $(../semver-from-git.sh <COMMIT_HASH>)
+#
+# For prerelease, it prints:
+#
+#   export GIT_BRANCH="master"
+#   export GIT_SEMVER_FROM_TAG="1.0.1-master+3.ge675710"
+#
+# where GIT_BRANCH is the first branch it finds with the given commit, and the version string is:
+# <MAJOR>.<MINOR>.<PATCH>-<BRANCH>+<COMMITS-SINCE-TAG>.<COMMIT_HASH>
+#
+# When on an exact tag, it prints:
+#
+#   export GIT_BRANCH="master"
+#   export GIT_EXACT_TAG=v1.0.2
+#   export GIT_SEMVER_FROM_TAG=1.0.2
+#
+# When the working tree is dirty, it will also put ".SNAPSHOT.<HOSTNAME>" on the end of the version
+# This is useful if someone has deployed something from their local machine.
+
+# (C) Timothy Jones, 2019, released under BSD License 2.0 (3-clause BSD license)
+# https://github.com/TimothyJones 
+
+if [ -z "${1:-}" ]; then
+   COMMIT="HEAD"
+
+   # Test whether the working tree is dirty or not
+   if [ -z "$(git status -s)" ]; then
+     STATUS=""
+   else
+     STATUS=".SNAPSHOT.$(hostname -s)"
+   fi
+else
+   COMMIT="$1"
+   STATUS="" # When looking at an exact commit, the working tree is irrelevant
+fi
+
+DESCRIBE=$(git describe --always --tags "$COMMIT")
+VERSION=$(echo "$DESCRIBE" | sed 's/\(.*\)-\(.*\)-g\(.*\)/\1+\2.\3/' | sed 's/v\(.*\)/\1/')
+BRANCH=$(git branch --contains "$COMMIT" | grep -e "^\*" | sed 's/^\* //')
+
+echo "export GIT_BRANCH=$BRANCH"
+export GIT_BRANCH=$BRANCH
+
+EXACT_TAG=$(git describe --always --exact-match --tags "$COMMIT" 2> /dev/null || true)
+if [ ! -z "$EXACT_TAG" ] ; then
+  echo "export GIT_EXACT_TAG=${EXACT_TAG}"
+  echo "export GIT_SEMVER_FROM_TAG=$VERSION$STATUS"
+  export GIT_EXACT_TAG=${EXACT_TAG}
+  export GIT_SEMVER_FROM_TAG=$VERSION$STATUS
+else
+  # We split up the prefix and suffix so that we don't accidentally
+  # give sed commands via the branch name
+  PREFIX="$(echo "$VERSION" | sed 's/\(.*\)\(\+.*\)/\1/')"
+  SUFFIX="$(echo "$VERSION" | sed 's/\(.*\)\(\+.*\)/\2/')"
+  if [ -z $(echo "$PREFIX" | grep "-") ]; then
+    echo "export GIT_SEMVER_FROM_TAG=$PREFIX-$BRANCH""$SUFFIX$STATUS"
+    export GIT_SEMVER_FROM_TAG=$PREFIX-$BRANCH""$SUFFIX$STATUS
+  else
+    echo "export GIT_SEMVER_FROM_TAG=$PREFIX.$BRANCH""$SUFFIX$STATUS"
+    export GIT_SEMVER_FROM_TAG=$PREFIX.$BRANCH""$SUFFIX$STATUS
+  fi
+fi
+
+### Add docker tags
+echo "export DOCKER_EXACT_TAG=${GIT_EXACT_TAG/v}"
+export DOCKER_EXACT_TAG=${GIT_EXACT_TAG/v}
+echo "export DOCKER_MAJOR_TAG=${DOCKER_EXACT_TAG%.*.*}"
+export DOCKER_MAJOR_TAG=${DOCKER_EXACT_TAG%.*.*}
+echo "export DOCKER_MINOR_TAG=${DOCKER_EXACT_TAG%.*}"
+export DOCKER_MINOR_TAG=${DOCKER_EXACT_TAG%.*}