Dockerfile fix

Docker/Dockerfile

@@ -40,7 +40,7 @@ COPY --from=0 /usr/local/ /usr/local/
 
 # Install dependencies
 RUN apt-get update \
-	&& apt-get install -yq --no-install-suggests --no-install-recommends python-setuptools \
+	&& apt-get install -yq --no-install-suggests --no-install-recommends python-setuptools moreutils \
 	&& rm -rf /var/lib/apt/lists/*
 
 # Create a user
@@ -54,16 +54,18 @@ USER bitmessage
 RUN pybitmessage -t
 
 # Setup environment
-CMD sed -i -e "s|\(apiinterface = \).*|\10\.0\.0\.0|g" \
-        #&& -e "s|\(apivariant = \).*|\1json|g" \
-        -e "s|\(apiusername = \).*|\1$BITMESSAGE_API_USER|g" \
-        -e "s|\(apipassword = \).*|\1$BITMESSAGE_API_PASSWORD|g" \
-        -e "s|\(apiport = \).*|\1$BITMESSAGE_API_PORT|g" \
-        -e "s|\(apienabled = \).*|\1True|g" \
-        -e "s|\(ttl = \).*|\1$BITMESSAGE_TTL|g" \
-        -e "s|\(stopresendingafterxdays = \).*|\1$BITMESSAGE_STOPRESENDINGAFTERXDAYS|g" \
-        -e "s|\(udp = \).*|\1False|g" keys.dat \
-        && exec pybitmessage -d
+CMD cat keys.dat | \
+	sed -e "s|\(apiinterface = \).*|\10\.0\.0\.0|g" \
+        	#-e "s|\(apivariant = \).*|\1json|g" \
+        	-e "s|\(apiusername = \).*|\1$BITMESSAGE_API_USER|g" \
+        	-e "s|\(apipassword = \).*|\1$BITMESSAGE_API_PASSWORD|g" \
+        	-e "s|\(apiport = \).*|\1$BITMESSAGE_API_PORT|g" \
+        	-e "s|\(apienabled = \).*|\1True|g" \
+        	-e "s|\(ttl = \).*|\1$BITMESSAGE_TTL|g" \
+        	-e "s|\(stopresendingafterxdays = \).*|\1$BITMESSAGE_STOPRESENDINGAFTERXDAYS|g" \
+        	-e "s|\(udp = \).*|\1False|g" | \
+	sponge keys.dat && \
+	exec pybitmessage -d
 
 # Generate Deterministic address
 HEALTHCHECK --retries=3 --interval=15s \