Improve docker build process and doc

README.md

@@ -80,11 +80,11 @@ For more info, see [the public repository](https://hub.docker.com/r/kamax/mxisd/
 ### From source
 [Build mxisd](#build) then build the docker image:
 ```
-docker build -t your-org/mxisd:$(git describe --tags --always --dirty) .
+./gradlew dockerBuild
 ```
 You can run a container of the given image and test it with the following command (adapt volumes host paths):
 ```
-docker run -v /data/mxisd/etc:/etc/mxisd -v /data/mxisd/var:/var/mxisd -p 8090:8090 -t your-org/mxisd:$(git describe --tags --always --dirty)
+docker run -v /data/mxisd/etc:/etc/mxisd -v /data/mxisd/var:/var/mxisd -p 8090:8090 -t kamax/mxisd:latest-dev
 ```
 
 # From Source

build.gradle

@@ -40,6 +40,9 @@ def debBuildConfPath = "${debBuildBasePath}${debConfPath}"
 def debBuildDataPath = "${debBuildBasePath}${debDataPath}"
 def debBuildSystemdPath = "${debBuildBasePath}${debSystemdPath}"
 
+def dockerImageName = "kamax/mxisd"
+def dockerImageTag = "${dockerImageName}:${gitVersion()}"
+
 String gitVersion() {
     def versionPattern = Pattern.compile("v(\\d+\\.)?(\\d+\\.)?(\\d+)(-.*)?")
     ByteArrayOutputStream out = new ByteArrayOutputStream()
@@ -218,9 +221,15 @@ task buildDeb(dependsOn: build) {
 }
 
 task dockerBuild(type: Exec, dependsOn: build) {
-    commandLine 'docker', 'build', '-t', "kamax/mxisd:${gitVersion()}", project.rootDir
+    commandLine 'docker', 'build', '-t', dockerImageTag, project.rootDir
+
+    doLast {
+        exec {
+            commandLine 'docker', 'tag', dockerImageTag, "${dockerImageName}:latest-dev"
+        }
+    }
 }
 
 task dockerPush(type: Exec) {
-    commandLine 'docker', 'push', "kamax/mxisd:${gitVersion()}"
+    commandLine 'docker', 'push', dockerImageTag
 }