Updated docker base images for v2.3 (#143)

- Updated base image for dist, mware, and packer
- Added NON_VOLATILE modifier to N_bc_state_var declarations

dist/Dockerfile

@@ -1,4 +1,4 @@
-FROM debian:buster-slim
+FROM debian:bullseye-slim
 
 RUN apt-get update && \
     apt-get install -y gnupg2

docker/mware/Dockerfile

@@ -1,20 +1,20 @@
-FROM python:3.7.10-slim-stretch
+FROM python:3.7.16-slim-bullseye
 
 WORKDIR /hsm2
 
 RUN apt-get update && \
     apt-get install -y apt-utils vim && \
-    apt-get install -y build-essential=12.3 && \
+    apt-get install -y build-essential=12.9 && \
     apt-get install -y git
 
 # Python package prerequisites
 RUN apt-get install -y \
-    libsecp256k1-dev=0.1~20161228-1 \
-    python3-pkgconfig=1.2.2-1 \
-    libusb-1.0-0-dev=2:1.0.21-1 \
-    libudev-dev=232-25+deb9u12 \
-    libffi-dev=3.2.1-6 \
-    libjpeg-dev=1:1.5.1-2+deb9u2
+    libsecp256k1-dev=0.1~20210108-1 \
+    python3-pkgconfig=1.5.1-3 \
+    libusb-1.0-0-dev=2:1.0.24-3 \
+    libudev-dev=247.3-7+deb11u2 \
+    libffi-dev=3.3-6 #\
+    libjpeg-dev=1:2.0.6-4
 
 COPY requirements.txt /hsm2/requirements.txt
 RUN pip install -r requirements.txt --require-hashes

docker/packer/Dockerfile

@@ -1,6 +1,6 @@
-FROM debian:buster-slim
+FROM debian:bullseye-slim
 
 WORKDIR /hsm2
 
 RUN apt-get update && \
-    apt-get install -y apt-utils binutils=2.31.1-16 vim
+    apt-get install -y apt-utils binutils=2.35.2-2 vim

ledger/src/signer/src/bc_state.c

@@ -88,7 +88,7 @@ void bc_init_state() {
 // -----------------------------------------------------------------------
 
 // Non-volatile blockchain validation state
-const bc_state_t N_bc_state_var;
+NON_VOLATILE bc_state_t N_bc_state_var;
 
 /*
  * Dump hash corresponding to hash_codes[hash_ix] to APDU.

ledger/src/signer/src/bc_state.h

@@ -39,6 +39,7 @@
 
 #include "bc.h"
 #include "bc_diff.h"
+#include "runtime.h"
 
 typedef struct {
     uint8_t best_block[HASH_SIZE];
@@ -56,7 +57,7 @@ typedef struct {
     } updating;
 } bc_state_t;
 
-extern const bc_state_t N_bc_state_var;
+extern NON_VOLATILE bc_state_t N_bc_state_var;
 #define N_bc_state (*(bc_state_t*)PIC(&N_bc_state_var))
 
 #ifndef PARAM_INITIAL_BLOCK_HASH