place generated environment variables in .env

Author: kentcdodds

other/Dockerfile

@@ -54,6 +54,10 @@ RUN --mount=type=secret,id=SENTRY_AUTH_TOKEN \
 # Finally, build the production image with minimal footprint
 FROM base
 
+# Generate random value and save it to .env file which will be loaded by dotenv
+RUN INTERNAL_COMMAND_TOKEN=$(openssl rand -hex 32) && \
+  echo "INTERNAL_COMMAND_TOKEN=$INTERNAL_COMMAND_TOKEN" > .env
+
 ENV FLY="true"
 ENV LITEFS_DIR="/litefs/data"
 ENV DATABASE_FILENAME="sqlite.db"
@@ -67,10 +71,6 @@ ENV NODE_ENV="production"
 # For WAL support: https://github.com/prisma/prisma-engines/issues/4675#issuecomment-1914383246
 ENV PRISMA_SCHEMA_DISABLE_ADVISORY_LOCK = "1"
 
-# Generate random value and set it as environment variable
-RUN INTERNAL_COMMAND_TOKEN=$(openssl rand -hex 32) && \
-  echo "INTERNAL_COMMAND_TOKEN=$INTERNAL_COMMAND_TOKEN" >> /etc/environment
-
 # add shortcut for connecting to database CLI
 RUN echo "#!/bin/sh\nset -x\nsqlite3 \$DATABASE_URL" > /usr/local/bin/database-cli && chmod +x /usr/local/bin/database-cli