Add scripts for automating image builds

Makefile

@@ -4,11 +4,11 @@ get_release:
 
 .PHONY: build
 build:
-	docker build -t sayplastic/lbrynet .
+	docker build -t sayplastic/lbrynet:$(VERSION) .
 
 .PHONY: publish
 publish:
-	docker push sayplastic/lbrynet
+	scripts/publish.sh
 
 clean:
 	rm -rf lbrynet lbrynet-linux.zip

README.md

@@ -2,6 +2,8 @@
 
 ## Image usage
 
+Put this in your docker-compose file:
+
 ```
 version: '3.2'
 
@@ -21,9 +23,22 @@ services:
         target: /storage
 ```
 
-## Building
+## Updating, building and publishing
+
+#### Using the provided Makefile
+
+This is the preferred method because it also checks if our newly built container can actually run.
 
 ```
+make get_release
+VERSION=0.30.5 make build
+VERSION=0.30.5 make publish
+```
+
+#### Manually
+
+```
+make get_release
 docker build -t sayplastic/lbrynet:0.30rc6 .
 docker tag sayplastic/lbrynet:0.30rc6 sayplastic/lbrynet:latest
 docker push sayplastic/lbrynet

scripts/get_release.sh

@@ -0,0 +1,13 @@
+#!/bin/bash
+
+URL=$(
+    curl -si https://api.github.com/repos/lbryio/lbry/releases/latest|
+    grep browser_download_url|
+    sed -E 's/.*"([^"]+)".*/\1/'|
+    grep linux
+)
+
+echo "Getting the latest release from $URL..."
+curl -sOL $URL
+unzip lbrynet-linux.zip
+rm lbrynet-linux.zip

scripts/publish.sh

@@ -0,0 +1,28 @@
+#!/bin/bash
+
+set +x
+set -e
+
+WAIT=5
+BASE_IMAGE_NAME=sayplastic/lbrynet
+
+if [ -z ${VERSION+x} ]; then
+    echo "Please provide sayplastic/lbrynet version as \$VERSION variable."
+    exit 1
+fi
+
+echo "Launching daemon container for ${BASE_IMAGE_NAME}:${VERSION} and giving it ${WAIT} secs..."
+
+ID=$(docker run --detach --rm $BASE_IMAGE_NAME:$VERSION)
+sleep $WAIT
+
+if [[ -z "${ID+x}" || ! $(docker top "$ID") ]]; then
+    echo "Container crashed unexpectedly, aborting"
+    exit 1
+fi
+
+echo "Container launched successfully, stopping it"
+docker kill $ID
+
+echo "Pushing to Docker Hub..."
+docker push sayplastic/lbrynet:$VERSION

start.sh

@@ -7,4 +7,8 @@ if [ ! -d "$LBRY_DOWNLOAD_DIRECTORY" ]; then
     mkdir $LBRY_DOWNLOAD_DIRECTORY
 fi
 
-./lbrynet start
+if [ -z ${LBRY_DOCKER_CONFIG+x} ]; then
+    ./lbrynet start --config=/daemon/daemon_settings.yml
+else
+    ./lbrynet start --config=$LBRY_DOCKER_CONFIG
+fi