message: Restructured docker docu
diff: @@ -99,19 +99,6 @@ spectrecoind. The image is based on our spectre base image [hlxeasy/spectre-base
  and so the dedicated user _spectre_ with UID _1000_ and GID _1000_ is used to run
  spectrecoind.
  -#### How to build
  -```
  -docker build -t hlxeasy/spectre:latest .
  -```
  -
  -#### Using more than one core
  -If multiple cores available for build, you can pass the amount of cores
  -to use to the build command:
  -
  -```
  -docker build -t hlxeasy/spectre:latest --build-arg BUILD_THREADS=6 .
  -```
  -
  #### Start new container
  You should prepare a directory on the host machine, which contains all
  spectrecoind data. Per default this is the directory _~/.spectrecoin_ and you
  @@ -159,3 +146,17 @@ After _docker stop_ the container can be removed using
  ```
  docker rm spectre
  ```
  +
  +#### Build image yourself
  +```
  +docker build -t hlxeasy/spectre:latest .
  +```
  +
  +#### Using more than one core
  +If multiple cores available for build, you can pass the amount of cores
  +to use to the build command:
  +
  +```
  +docker build -t hlxeasy/spectre:latest --build-arg BUILD_THREADS=6 .
  +```
  +
  