Add python3 to dev image (#22)

* Add `python3` to `dev` image

* Remove obsolete package `golang-1.19-go`

Author: damyan

dev/Dockerfile

@@ -4,7 +4,7 @@ USER root
 
 RUN apt-get update \
   && apt-get install -y --no-install-recommends \
-    build-essential gdb golang-1.19-go golang-1.20-go golang-1.21-go delve make \
+    build-essential delve gdb golang-1.20-go golang-1.21-go make python3 python3-pip \
   && rm -rf /var/lib/apt/lists/*
 
 WORKDIR "/home/damyan"