diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 1b5eccce7..cbc7101ec 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -144,10 +144,10 @@ test:multinode.sh:
     - jbuilder build @test/runtest_multinode.sh
   retry: 1
 
-test:proto:sandboxing:
+test:proto:sandbox:
   <<: *test_definition
   script:
-    - jbuilder build @src/proto/runtest_sandboxing
+    - jbuilder build @runtest_sandbox
 
 ## Publishing (small) docker images with tezos binaries
 
diff --git a/scripts/Dockerfile.build.in b/scripts/Dockerfile.build.in
index bfc808fa7..a77abdbb7 100644
--- a/scripts/Dockerfile.build.in
+++ b/scripts/Dockerfile.build.in
@@ -1,10 +1,6 @@
 FROM $base_image
 
-COPY src tezos/src
-COPY test tezos/test
-COPY scripts tezos/scripts
-COPY vendors tezos/vendors
-COPY Makefile jbuild .ocp-indent tezos/
+COPY . tezos
 
 RUN sudo chown -R opam /home/opam/tezos && \
     cd tezos && \
diff --git a/scripts/Dockerfile.build_deps.in b/scripts/Dockerfile.build_deps.in
index eff41fa89..08342c124 100644
--- a/scripts/Dockerfile.build_deps.in
+++ b/scripts/Dockerfile.build_deps.in
@@ -1,7 +1,7 @@
 FROM $base_image
 
 COPY scripts/install_build_deps.sh scripts/version.sh tezos/scripts/
-COPY tezos.opam tezos/
+COPY tezos-deps.opam tezos/
 RUN sudo apk update && \
     opam config exec -- ./tezos/scripts/install_build_deps.sh && \
     opam install ocp-indent && \
diff --git a/scripts/alphanet_constants.patch b/scripts/alphanet_constants.patch
index 86d2059ec..f7388ef7a 100644
--- a/scripts/alphanet_constants.patch
+++ b/scripts/alphanet_constants.patch
@@ -1,7 +1,7 @@
-diff --git a/src/proto/alpha/constants_repr.ml b/src/proto/alpha/constants_repr.ml
+diff --git a/lib_embedded_protocol_alpha/src/constants_repr.ml b/lib_embedded_protocol_alpha/src/constants_repr.ml
 index 61e79c8a..f91ce282 100644
---- a/src/proto/alpha/constants_repr.ml
-+++ b/src/proto/alpha/constants_repr.ml
+--- a/lib_embedded_protocol_alpha/src/constants_repr.ml
++++ b/lib_embedded_protocol_alpha/src/constants_repr.ml
 @@ -49,15 +49,14 @@ let read_public_key s =
    Ed25519.Public_key.of_bytes (Bytes.of_string (Hex_encode.hex_decode s))
  
diff --git a/scripts/install_build_deps.sh b/scripts/install_build_deps.sh
index 19a76ca9b..62a492e12 100755
--- a/scripts/install_build_deps.sh
+++ b/scripts/install_build_deps.sh
@@ -20,10 +20,10 @@ opam pin --yes add --no-action --dev-repo sodium
 opam pin --yes add --no-action --dev-repo ocp-ocamlres
 opam pin --yes add --no-action --dev-repo ocplib-json-typed
 ## Force opam to take account of the new `tezos-deps.opam`
-opam pin --yes remove tezos
-opam pin --yes add --no-action tezos $src_dir
+opam pin --yes remove tezos-deps
+opam pin --yes add --no-action tezos-deps $src_dir
 
 opam list --installed depext || opam install depext
-opam depext tezos
+opam depext tezos-deps
 
-opam install tezos --deps-only
+opam install tezos-deps --deps-only
diff --git a/tezos-deps.opam b/tezos-deps.opam
new file mode 100644
index 000000000..b4c7c5182
--- /dev/null
+++ b/tezos-deps.opam
@@ -0,0 +1,36 @@
+opam-version: "1.2"
+version: "dev"
+maintainer: "contact@tezos.com"
+authors: [ "Tezos devteam" ]
+homepage: "https://www.tezos.com/"
+bug-reports: "https://gitlab.com/tezos/tezos/issues"
+dev-repo: "https://gitlab.com/tezos/tezos.git"
+license: "unreleased"
+depends: [
+  "ocamlfind" { build }
+  "jbuilder" { build & >= "1.0+beta15" }
+  "base-bigarray"
+  "base-threads"
+  "conf-libev"
+  "calendar"
+  "cohttp" { >= "0.21" }
+  "conduit"
+  "ezjsonm" { >= "0.5.0" }
+  "git"
+  "git-unix"
+  "irmin" { >= "1.3" }
+  "irmin-unix" { >= "1.3" }
+  "lwt" { >= "3.0.0" }
+  "lwt_ssl"
+  "menhir"
+  "mtime" { >= "1.0.0" }
+  "ocp-ocamlres" { >= "dev" }
+  "ocplib-endian"
+  "ocplib-json-typed"
+  "reactiveData"
+  "sodium" { >= "0.3.0" }
+  "magic-mime"
+  "leveldb" { >= "1.1.2" }
+  "kaputt" # { test }
+  "bisect_ppx" # { test }
+]