remove sdkconfig feature not needed

Author: Emmanuel Florent

pycom-docker-fw-build/Dockerfile

@@ -1,7 +1,6 @@
 FROM ubuntu:bionic
 
-RUN apt-get update && apt-get -y install wget git build-essential python \
-    python-serial  libncurses5 libncurses5-dev flex  bison gperf && \
+RUN apt-get update && apt-get -y install wget git build-essential python python-serial && \
     mkdir /opt/frozen/ && cd /opt && \
     wget -q https://dl.espressif.com/dl/xtensa-esp32-elf-linux64-1.22.0-80-g6c4433a-5.2.0.tar.gz && \
     tar -xzvf xtensa-esp32-elf-linux64-1.22.0-80-g6c4433a-5.2.0.tar.gz  && \

pycom-docker-fw-build/README.md

@@ -11,20 +11,16 @@ where board in `WIPY LOPY SIPY GPY FIPY LOPY4` and your-project-version-code is
 
 ### example:
 
-For building against a specific revision (ex:v1.20.0.rc7 idf_v3.1) you can use:
+If you have your MicroPython project in the current directory `.` just type:
+
 ```
-sudo docker run -v `pwd`:/opt/frozen -it goinvent/pycom-fw  build FIPY myproject v1.20.0.rc7 idf_v3.1
+sudo docker run -v `pwd`:/opt/frozen -it goinvent/pycom-fw  build LOPY4 myproject
 ```
-
-### Altering Espressif IDF options:
-
-Have a file `sdkconfig.defaults` similar to https://github.com/pycom/pycom-esp-idf/blob/master/examples/wifi/scan/sdkconfig in your local frozen directory (ex: .), then use the same command:
-
+For building against a specific revision (ex:v1.20.0.rc0 idf_v3.1) you can use:
 ```
-sudo docker run -v `pwd`:/opt/frozen -it goinvent/pycom-fw  build FIPY myproject v1.20.0.rc7 idf_v3.1
+sudo docker run -v `pwd`:/opt/frozen -it goinvent/pycom-fw  build FIPY myproject v1.20.0.rc0 idf_v3.1
 ```
 
-Beginning the build the `sdkconfig.defaults` overrides.
 
 ### note:
 

pycom-docker-fw-build/assets/build

@@ -51,39 +51,25 @@ function prepare_dev() {
       cd /opt/pycom-esp-idf
       git checkout $2
       git submodule update --init
-
-      if [ -f /opt/frozen/sdkconfig.defaults ]
-      then
-          cd examples/wifi/scan/
-          cp /opt/frozen/sdkconfig.defaults sdkconfig.defaults
-          make defconfig
-          make bootloader
-          make -j4 all
-          echo "IDF build options:"
-          cat sdkconfig
-      fi
     fi
 }
 
 function build() {
   BOARD=$1
   PROJECT=$2
+  export PATH=$PATH:/opt/xtensa-esp32-elf/bin/
+  export IDF_PATH=/opt/pycom-esp-idf
   board=`echo "$BOARD" | tr '[:upper:]' '[:lower:]'`
   cd /opt/pycom-micropython-sigfox/esp32/ &&
   make clean BOARD=$BOARD &&
   cd ../mpy-cross && make clean && make && cd ../esp32  &&
   cp /opt/frozen/*.py ./frozen/Base/ &&
   mv ./frozen/Base/main.py ./frozen/Base/_main.py
-  make TARGET=boot COPY_IDF_LIBS=1 BOARD=$BOARD RELEASE_DIR=/tmp
-  cat /opt/pycom-esp-idf/examples/wifi/scan/sdkconfig.defaults
-  make release COPY_IDF_LIBS=1 BOARD=$BOARD RELEASE_DIR=/tmp
+  make release BOARD=$BOARD RELEASE_DIR=/tmp
   mv /tmp/*.tar.gz /opt/frozen/$board-firmware-$PROJECT.tar.gz
   echo "Firmware $board-firmware-$PROJECT.tar.gz ready !"
 }
 
-export PATH=$PATH:/opt/xtensa-esp32-elf/bin/
-export IDF_PATH=/opt/pycom-esp-idf
-
 [[ $boards =~ (^|[[:space:]])$1($|[[:space:]]) ]] &&
         echo "#goinvent " ||
   usage