diff --git a/.dockerignore b/.dockerignore
index 44afaad418..5b283cec1e 100644
--- a/.dockerignore
+++ b/.dockerignore
@@ -1,14 +1,12 @@
 *
-!target/x86_64-unknown-linux-musl/release/server
-!target/x86_64-unknown-linux-musl/release/server_supervisor
-!target/x86_64-unknown-linux-musl/release/plonk_step_by_step_prover
-!target/x86_64-unknown-linux-musl/release/dummy_prover
-!target/x86_64-unknown-linux-musl/release/dev-ticker-server
 !docker/prover/prover-entry.sh
 !docker/keybase-secrets/entrypoint.sh
 !keys/packed
 !docker/nginx/nginx.conf
 !bin/
+!core/
+!Cargo.lock
+!Cargo.toml
 !contracts/build
 !js/client/index.html
 !js/client/dist
diff --git a/.github/workflows/promote-stage.yml b/.github/workflows/promote-stage.yml
index a20ae25481..88c8b86638 100644
--- a/.github/workflows/promote-stage.yml
+++ b/.github/workflows/promote-stage.yml
@@ -11,17 +11,6 @@ jobs:
     steps:
     - uses: actions/checkout@v2
 
-    - name: Get env from keybase
-      uses: ./.github/actions/keybase-secrets
-      with:
-        repo: keybase://team/matter_labs/zk-secret
-      env:
-        KEYBASE_PAPERKEY: ${{ secrets.KEYBASE_PAPERKEY }}
-        KEYBASE_USERNAME: ${{ secrets.KEYBASE_USERNAME }}
-
-    - name: restore-selfhosted-runner-cache
-      run: tar xf ~/runner-cache.tar
-
     - name: setup-env
       run: |
         echo "::set-env name=ZKSYNC_HOME::$(pwd)"
@@ -39,3 +28,13 @@ jobs:
         docker login -u ${{ secrets.DOCKER_USER }} -p ${{ secrets.DOCKER_PASSWORD }}
         zksync update-images
         echo "::set-env name=IMAGE_TAG::$(f sh -c 'echo $IMAGE_TAG')"
+
+    - name: promote-to-gitlab
+      run: |
+        curl -X POST \
+         -F token=${{ secrets.GITLAB_TOKEN }} \
+         -F "ref=gitlab-deploy" \
+         -F "variables[SERVER_TAG]=$IMAGE_TAG" \
+         -F "variables[PROVER_TAG]=$IMAGE_TAG" \
+         -F "variables[EXPLORER_TAG]=$IMAGE_TAG" \
+         https://gitlab.com/api/v4/projects/19165314/trigger/pipeline
\ No newline at end of file
diff --git a/Makefile b/Makefile
index d4f74695b8..8b8b29e984 100644
--- a/Makefile
+++ b/Makefile
@@ -113,11 +113,6 @@ image-keybase:
 push-image-keybase: image-keybase
 	docker push "${KEYBASE_DOCKER_IMAGE}"
 
-# Using RUST+Linux docker image (ekidd/rust-musl-builder) to build for Linux. More at https://github.com/emk/rust-musl-builder
-docker-options = --rm -v $(shell pwd):/home/rust/src -v cargo-git:/home/rust/.cargo/git -v cargo-registry:/home/rust/.cargo/registry --env-file $(ZKSYNC_HOME)/etc/env/$(ZKSYNC_ENV).env
-rust-musl-builder = @docker run $(docker-options) ekidd/rust-musl-builder
-
-
 # Rust: main stuff
 
 server:
@@ -126,19 +121,11 @@ server:
 sandbox:
 	@cargo run --bin sandbox
 
-# See more more at https://github.com/emk/rust-musl-builder#caching-builds
-build-target: build-contracts
-	$(rust-musl-builder) sudo chown -R rust:rust /home/rust/src /home/rust/.cargo/git /home/rust/.cargo/registry
-	$(rust-musl-builder) cargo build --release
-
-clean-target:
-	$(rust-musl-builder) cargo clean
-
-image-server: build-target
-	@docker build -t "${SERVER_DOCKER_IMAGE}" -t "${SERVER_DOCKER_IMAGE_LATEST}" -f ./docker/server/Dockerfile .
+image-server: build-contracts
+	@DOCKER_BUILDKIT=1 docker build -t "${SERVER_DOCKER_IMAGE}" -t "${SERVER_DOCKER_IMAGE_LATEST}" -f ./docker/server/Dockerfile .
 
-image-prover: build-target
-	@docker build -t "${PROVER_DOCKER_IMAGE}" -t "${PROVER_DOCKER_IMAGE_LATEST}"  -f ./docker/prover/Dockerfile .
+image-prover: build-contracts
+	@DOCKER_BUILDKIT=1 docker build -t "${PROVER_DOCKER_IMAGE}" -t "${PROVER_DOCKER_IMAGE_LATEST}"  -f ./docker/prover/Dockerfile .
 
 image-rust: image-server image-prover
 
@@ -289,7 +276,7 @@ dev-build-geth:
 dev-push-geth:
 	@docker push "${GETH_DOCKER_IMAGE}"
 
-image-dev-ticker: build-target
+image-dev-ticker:
 	@docker build -t "${DEV_TICKER_DOCKER_IMAGE}" -f ./docker/dev-ticker/Dockerfile .
 
 push-image-dev-ticker: image-dev-ticker
diff --git a/docker/dev-ticker/Dockerfile b/docker/dev-ticker/Dockerfile
index 64be55f48d..4e85daa423 100644
--- a/docker/dev-ticker/Dockerfile
+++ b/docker/dev-ticker/Dockerfile
@@ -1,5 +1,16 @@
-FROM alpine
+# syntax=docker/dockerfile:experimental
+FROM rust:1.45 as builder
+RUN --mount=type=cache,target=/usr/local/cargo/registry \
+    cargo install sccache
+WORKDIR /usr/src/zksync
+COPY . .
+RUN --mount=type=cache,target=/usr/local/cargo/registry \
+    --mount=type=cache,target=/root/.cache/sccache \
+    RUSTC_WRAPPER=/usr/local/cargo/bin/sccache \
+    cargo build --release
+
+FROM debian:buster-slim
 EXPOSE 9876
 ENV RUST_LOG info
-COPY target/x86_64-unknown-linux-musl/release/dev-ticker-server /bin/
+COPY --from=builder /usr/src/zksync/target/release/dev-ticker-server /bin/
 ENTRYPOINT ["dev-ticker-server"]
diff --git a/docker/prover/Dockerfile b/docker/prover/Dockerfile
index d0e4383c56..60f490a3a4 100644
--- a/docker/prover/Dockerfile
+++ b/docker/prover/Dockerfile
@@ -1,4 +1,16 @@
-FROM alpine
+# syntax=docker/dockerfile:experimental
+FROM rust:1.45 as builder
+RUN --mount=type=cache,target=/usr/local/cargo/registry \
+    cargo install sccache
+WORKDIR /usr/src/zksync
+COPY . .
+RUN --mount=type=cache,target=/usr/local/cargo/registry \
+    --mount=type=cache,target=/root/.cache/sccache \
+    RUSTC_WRAPPER=/usr/local/cargo/bin/sccache \
+    cargo build --release
+
+FROM debian:buster-slim
+RUN apt-get update && apt-get install -y axel && rm -rf /var/lib/apt/lists/*
 # Docs of env variables used for this image
 # to test this locally just run
 # docker build -t tmp_prover -f =(f envsubst < ./docker/prover/Dockerfile) .; docker run --rm  tmp_prover:latest
@@ -19,14 +31,13 @@ FROM alpine
 #ENV PROVER_CYCLE_WAIT $PROVER_CYCLE_WAIT
 #ENV PROVER_GONE_TIMEOUT $PROVER_GONE_TIMEOUT
 #ENV DOCKER_DUMMY_PROVER $DOCKER_DUMMY_PROVER
-COPY target/x86_64-unknown-linux-musl/release/plonk_step_by_step_prover /bin/
-COPY target/x86_64-unknown-linux-musl/release/dummy_prover /bin/
+COPY --from=builder /usr/src/zksync/target/release/plonk_step_by_step_prover /bin/
+COPY --from=builder /usr/src/zksync/target/release/dummy_prover /bin/
 COPY docker/prover/prover-entry.sh /bin/
 COPY bin/plonk-setup /bin/
 COPY bin/verify-keys /bin/
 COPY bin/utils.sh /bin/
 COPY keys/packed /keys/packed
 COPY contracts/build/ /contracts/build/
-RUN apk add --no-cache axel curl bash
 
 CMD ["prover-entry.sh"]
diff --git a/docker/server/Dockerfile b/docker/server/Dockerfile
index dc231c67d1..6eb8a395ae 100644
--- a/docker/server/Dockerfile
+++ b/docker/server/Dockerfile
@@ -1,8 +1,20 @@
-FROM alpine
+# syntax=docker/dockerfile:experimental
+FROM rust:1.45 as builder
+RUN --mount=type=cache,target=/usr/local/cargo/registry \
+    cargo install sccache
+WORKDIR /usr/src/zksync
+COPY . .
+RUN --mount=type=cache,target=/usr/local/cargo/registry \
+    --mount=type=cache,target=/root/.cache/sccache \
+    RUSTC_WRAPPER=/usr/local/cargo/bin/sccache \
+    cargo build --release
+
+FROM debian:buster-slim
+RUN apt-get update && apt-get install -y libpq5 && rm -rf /var/lib/apt/lists/*
 EXPOSE 3000
 EXPOSE 3031
 EXPOSE 3030
-COPY target/x86_64-unknown-linux-musl/release/server /
+COPY --from=builder /usr/src/zksync/target/release/server /usr/bin
 COPY contracts/build/ /contracts/build/
 COPY bin/kube-is-leader.sh /bin/
-ENTRYPOINT ["/server"]
+ENTRYPOINT ["server"]
\ No newline at end of file