Fix Stage-1 Docker bootstrap and add persistent build log

docker/Dockerfile

@@ -13,6 +13,7 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     locales \
     tzdata \
     sudo \
+    openssh-client \
     git \
     rsync \
     gawk \

docker/docker-compose.yml

@@ -18,6 +18,7 @@ services:
     stdin_open: true
     volumes:
       - ../workspace:/work/elphel393
-      - ../cache/downloads:/work/elphel393/poky/build/downloads
-      - ../cache/sstate-cache:/work/elphel393/poky/build/sstate-cache
+      - ../cache/downloads:/cache/downloads
+      - ../cache/sstate-cache:/cache/sstate-cache
       - ../cache/ccache:/home/${USER_NAME:-builder}/.ccache
+      - ${HOME}/.ssh:/home/${USER_NAME:-builder}/.ssh

scripts/build_stage1.sh

@@ -6,6 +6,16 @@ REPO_ROOT="$(cd "${SCRIPT_DIR}/.." && pwd)"
 WORKSPACE="${REPO_ROOT}/workspace"
 REF_DIR="${REPO_ROOT}/docs/reference/107"
 USE_107_LOCALCONF="${USE_107_LOCALCONF:-1}"
+LOG_DIR="${REPO_ROOT}/logs"
+LOG_TS="$(date +%Y%m%d_%H%M%S)"
+LOG_FILE="${LOG_DIR}/build_stage1_${LOG_TS}.log"
+LATEST_LOG="${LOG_DIR}/build_stage1_latest.log"
+
+mkdir -p "${LOG_DIR}"
+ln -sfn "$(basename "${LOG_FILE}")" "${LATEST_LOG}"
+exec > >(tee -a "${LOG_FILE}") 2>&1
+echo "Stage1 log: ${LOG_FILE}"
+echo "Latest log symlink: ${LATEST_LOG}"
 
 copy_localconf_107() {
   local src="${REF_DIR}/local.conf"
@@ -43,6 +53,11 @@ TARGETS_STR="${TARGETS[*]}"
 "${SCRIPT_DIR}/run_docker.sh" bash -lc "
 set -e
 cd /work/elphel393
+mkdir -p \"\${HOME}/.ssh\"
+chmod 700 \"\${HOME}/.ssh\"
+touch \"\${HOME}/.ssh/known_hosts\"
+chmod 600 \"\${HOME}/.ssh/known_hosts\"
+ssh-keyscan -H git.elphel.com >> \"\${HOME}/.ssh/known_hosts\" 2>/dev/null || true
 ./setup.py
 "
 
@@ -58,5 +73,7 @@ cd /work/elphel393/poky
 set +u
 . ./oe-init-build-env build
 set -u
+export DL_DIR=/cache/downloads
+export SSTATE_DIR=/cache/sstate-cache
 bitbake ${TARGETS_STR}
 "