Refactor Docker setup and update force tag in Dockerfile and start.sh

Dockerfile

@@ -50,8 +50,8 @@ ENV FORCE_TAG=${FORCE_TAG}
 ENV config=${HOME}/suibase/workdirs/localnet/suibase.yaml
 # if FORCE_TAG is set, then checkout to the specified tag
 RUN if [ -n "$FORCE_TAG" ]; then \
-  echo '' >> ${config} \
-  echo 'force_tag: "${FORCE_TAG}" >> ${config};' \
+  echo '' >> $config; \
+  echo 'force_tag: "devnet-v1.27.0"' >> $config; \
   localnet update; \
   fi
 

start.sh

@@ -1,9 +1,9 @@
 #!/bin/bash
 if [ -n "$FORCE_TAG" ]; then \
-  export config=${HOME}/suibase/workdirs/localnet/suibase.yaml \
-  echo '' >> ${config}; \
-  echo 'force_tag: "${FORCE_TAG}" >> ${config};'; \
-  localnet update; \
+  config=~/suibase/workdirs/localnet/suibase.yaml
+  echo '' >> $config
+  echo 'force_tag: "${FORCE_TAG}"' >> $config
+  localnet update
 fi
 localnet start &! \
 tail -f ~/suibase/workdirs/common/logs/suibase-daemon.log