update descriptions on docker hub (#191)

* add script to update image description on docker hub
* also set (short) description

fixes #179

* add optional step to makefile to update docker hub readme files

to update readme on docker hub add DOCKERREADME=yes to .env (values of variable is irrelevant, only that it its set)

* add docker_repo to .env

this fixes tagging of images for docker orgs other than the default value

.travis.yml

@@ -24,6 +24,8 @@ install:
   - make lint
   - "./test.exp"
   - make lint # rerun lint to see if output is different with .env in place
+  - echo "docker_repo=$docker_repo" >> .env
+  - echo "DOCKERREADME=yes" >> .env # add DOCKERREADME env var so that make publish also updates readme files on docker hub
   - travis_retry make build-all
 script:
   - make test-ci

.travis/docker-hub-helper.sh

@@ -0,0 +1,95 @@
+#!/bin/bash
+# bash .travis/docker-hub-helper.sh base
+
+set -euo pipefail
+IFS=$'\n\t'
+
+# this is a kind of ugly hack to be able to source the env file
+# this is sadly needed since postfix in https://github.com/tomav/docker-mailserver/ cannot deal with quoted values
+tmpfile=$(mktemp /tmp/kopano-docker-env.XXXXXX)
+cp ./.env "$tmpfile"
+sed -i '/LDAP_QUERY_FILTER/s/^/#/g' "$tmpfile"
+sed -i '/SASLAUTHD_LDAP_FILTER/s/^/#/g' "$tmpfile"
+# shellcheck disable=SC1090
+source "$tmpfile"
+
+docker_repo=${docker_repo:-zokradonh}
+docker_login=${docker_login:-""}
+docker_pwd=${docker_pwd:-""}
+
+if [ -z "$docker_login" ]; then
+  docker_login="$(<~/.docker-account-user)"
+fi
+
+if [ -z "$docker_pwd" ]; then
+  docker_pwd="$(<~/.docker-account-pwd)"
+fi
+
+image=${1:-""}
+if [ -z "$image" ]; then
+  echo "ERROR: You must specify an image to modify."
+  exit 1
+fi
+
+# below code is based on https://github.com/moikot/golang-dep/blob/aab3ea8462a19407544f1ce9daa11c3f0924394c/.travis/push.sh
+#
+# Pushes README.md content to Docker Hub.
+#
+# $1 - The image name.
+# $2 - The JWT.
+#
+# Examples:
+#
+#   push_readme "foo/bar" "token"
+#
+push_readme() {
+  declare -r image="${1}"
+  declare -r token="${2}"
+  declare -r readme="${3}"
+
+  local code
+  code=$(jq -n --arg msg "$(<"${readme}")" \
+    '{"registry":"registry-1.docker.io","full_description": $msg }' | \
+        curl -s -o /dev/null  -L -w "%{http_code}" \
+           https://cloud.docker.com/v2/repositories/"${image}"/ \
+           -d @- -X PATCH \
+           -H "Content-Type: application/json" \
+           -H "Authorization: JWT ${token}")
+
+  if [[ "${code}" = "200" ]]; then
+    printf "Successfully pushed README to Docker Hub"
+  else
+    printf "Unable to push README to Docker Hub, response code: %s\n" "${code}"
+    exit 1
+  fi
+
+  local code
+  code=$(jq -n --arg msg "$(head -n 1 "${readme}" | cut -d' ' -f2-)" \
+    '{"registry":"registry-1.docker.io","description": $msg }' | \
+        curl -s -o /dev/null  -L -w "%{http_code}" \
+           https://cloud.docker.com/v2/repositories/"${image}"/ \
+           -d @- -X PATCH \
+           -H "Content-Type: application/json" \
+           -H "Authorization: JWT ${token}")
+
+  if [[ "${code}" = "200" ]]; then
+    printf "Successfully pushed description to Docker Hub"
+  else
+    printf "Unable to push description to Docker Hub, response code: %s\n" "${code}"
+    exit 1
+  fi
+}
+
+# Login into Docker repository
+#echo "$docker_pwd" | docker login -u "$docker_login" --password-stdin
+
+token=$(curl -s -X POST \
+-H "Content-Type: application/json" \
+-d '{"username": "'"$docker_login"'", "password": "'"$docker_pwd"'"}' \
+https://hub.docker.com/v2/users/login/ | jq -r .token)
+
+push_readme "${docker_repo}"/kopano_"${image}" "${token}" "${image}"/README.md
+
+if [ -e "$tmpfile" ]; then
+  rm "$tmpfile"
+fi

Makefile

@@ -3,8 +3,8 @@ SHELL := /bin/bash # Use bash syntax
 # if not run in travis, get docker_login and _pwd from file
 ifndef TRAVIS
 	docker_repo := zokradonh
-	docker_login := `cat ~/.docker-account-user`
-	docker_pwd := `cat ~/.docker-account-pwd`
+	docker_login := $(shell cat ~/.docker-account-user)
+	docker_pwd := $(shell cat ~/.docker-account-pwd)
 endif
 
 base_download_version := $(shell ./version.sh core)
@@ -256,7 +256,7 @@ tag-zpush:
 
 # Docker publish
 repo-login: ## Login at hub.docker.com
-	@docker login -u $(docker_login) -p $(docker_pwd)
+	@echo $(docker_pwd) | docker login -u $(docker_login) --password-stdin
 
 .PHONY: publish
 publish: repo-login
@@ -267,6 +267,9 @@ publish-container: ## Helper target to push a given image to a registry. Default
 	@echo 'publish latest to $(docker_repo)/kopano_$(component)'
 	docker push $(docker_repo)/kopano_$(component):${$(component)_version}
 	docker push $(docker_repo)/kopano_$(component):latest
+ifdef DOCKERREADME
+	.travis/docker-hub-helper.sh $(component)
+endif
 
 publish-base: tag-base
 	component=base make publish-container