Cardano Updates

- Remove contradictory -O4 -Oz flags (only the last one takes effect)
- Remove expensive optimization passes (--converge, --gufa, --flatten, --rereloop) that cause slow build times
- Remove --debuginfo as source is compiled without debug info for release build
- Use -Os for balanced size/speed optimization

Signed-off-by: bkioshn <[email protected]>

- Copy cardano-db-sync binary into a minimal Ubuntu image.
- Bake schema directory into the image and embed a deterministic SCHEMA_HASH.
- Add entrypoint template that verifies the runtime schema checksum matches the baked hash and execs the binary with --schema-dir /schema.
- Replace fragile heredoc with a template + sed substitution in the Dockerfile.
- Add build script to copy tarball/schema into build context and compute SCHEMA_HASH.
- Add test-image.sh to validate image behavior (help, schema mount, modified-schema detection, binary presence).

Signed-off-by: bkioshn <[email protected]>

Signed-off-by: bkioshn <[email protected]>

Signed-off-by: bkioshn <[email protected]>

Signed-off-by: bkioshn <[email protected]>

Signed-off-by: bkioshn <[email protected]>

Signed-off-by: bkioshn <[email protected]>