diff --git a/.dockerignore b/.dockerignore
new file mode 100644
index 00000000..b60de5b5
--- /dev/null
+++ b/.dockerignore
@@ -0,0 +1 @@
+**/target
diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 00000000..22f01748
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,17 @@
+FROM ubuntu:18.04
+
+RUN apt-get update -qq && apt-get install -y \
+    curl \
+    build-essential \
+    && rm -rf /var/lib/apt/lists/*
+
+COPY ./rust-toolchain /tmp/rust-toolchain
+
+ENV RUSTUP_HOME=/usr/local/rustup \
+    CARGO_HOME=/usr/local/cargo \
+    PATH=/usr/local/cargo/bin:$PATH
+
+RUN curl https://sh.rustup.rs -sSf | \
+    sh -s -- -y --no-modify-path --default-toolchain "$(cat /tmp/rust-toolchain)"
+
+RUN rustup target add wasm32-unknown-unknown
diff --git a/build-in-docker.sh b/build-in-docker.sh
new file mode 100755
index 00000000..d9c0deee
--- /dev/null
+++ b/build-in-docker.sh
@@ -0,0 +1,11 @@
+#!/bin/bash
+# build one of the contract in docker
+# Usage: ./build-in-docker.sh <contract-folder> 
+#   e.g. ./build-in-docker.sh lockup
+
+set -e
+
+docker build . -t near-core-contracts-builder
+srcdir=$(pwd)
+workdir=$srcdir/$1
+docker run -v $srcdir:$srcdir -w $workdir near-core-contracts-builder bash build.sh
diff --git a/lockup/build.sh b/lockup/build.sh
index dc79e2db..53d2417a 100755
--- a/lockup/build.sh
+++ b/lockup/build.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 set -e
 
-RUSTFLAGS='-C link-arg=-s' cargo +stable build --target wasm32-unknown-unknown --release
+RUSTFLAGS='-C link-arg=-s' cargo build --target wasm32-unknown-unknown --release
 cp target/wasm32-unknown-unknown/release/lockup_contract.wasm res/
 
diff --git a/lockup/res/lockup_contract.wasm b/lockup/res/lockup_contract.wasm
index 804881d0..08116e21 100755
Binary files a/lockup/res/lockup_contract.wasm and b/lockup/res/lockup_contract.wasm differ
diff --git a/multisig/build.sh b/multisig/build.sh
index bae2fd8c..a9131f30 100755
--- a/multisig/build.sh
+++ b/multisig/build.sh
@@ -1,5 +1,5 @@
 #!/bin/bash
 set -e
 
-RUSTFLAGS='-C link-arg=-s' cargo +stable build --target wasm32-unknown-unknown --release
+RUSTFLAGS='-C link-arg=-s' cargo build --target wasm32-unknown-unknown --release
 cp target/wasm32-unknown-unknown/release/multisig.wasm ./res/
diff --git a/multisig/res/multisig.wasm b/multisig/res/multisig.wasm
index e3ea9d96..ff44350c 100755
Binary files a/multisig/res/multisig.wasm and b/multisig/res/multisig.wasm differ
diff --git a/staking-pool-factory/build.sh b/staking-pool-factory/build.sh
index 8e0a0bc1..04008c23 100755
--- a/staking-pool-factory/build.sh
+++ b/staking-pool-factory/build.sh
@@ -1,5 +1,5 @@
 #!/bin/bash
 set -e
 
-RUSTFLAGS='-C link-arg=-s' cargo +stable build --target wasm32-unknown-unknown --release
+RUSTFLAGS='-C link-arg=-s' cargo build --target wasm32-unknown-unknown --release
 cp target/wasm32-unknown-unknown/release/staking_pool_factory.wasm ./res/
diff --git a/staking-pool-factory/res/staking_pool_factory.wasm b/staking-pool-factory/res/staking_pool_factory.wasm
index 2bc9189f..88a72fe3 100755
Binary files a/staking-pool-factory/res/staking_pool_factory.wasm and b/staking-pool-factory/res/staking_pool_factory.wasm differ
diff --git a/staking-pool/build.sh b/staking-pool/build.sh
index f3c00ddc..568767c3 100755
--- a/staking-pool/build.sh
+++ b/staking-pool/build.sh
@@ -1,5 +1,5 @@
 #!/bin/bash
 set -e
 
-RUSTFLAGS='-C link-arg=-s' cargo +stable build --target wasm32-unknown-unknown --release
+RUSTFLAGS='-C link-arg=-s' cargo build --target wasm32-unknown-unknown --release
 cp target/wasm32-unknown-unknown/release/staking_pool.wasm ./res/
diff --git a/staking-pool/res/staking_pool.wasm b/staking-pool/res/staking_pool.wasm
index 2e4ec265..c7fe5899 100755
Binary files a/staking-pool/res/staking_pool.wasm and b/staking-pool/res/staking_pool.wasm differ
diff --git a/whitelist/build.sh b/whitelist/build.sh
index 301e4912..39975cdf 100755
--- a/whitelist/build.sh
+++ b/whitelist/build.sh
@@ -1,5 +1,5 @@
 #!/bin/bash
 set -e
 
-RUSTFLAGS='-C link-arg=-s' cargo +stable build --target wasm32-unknown-unknown --release
+RUSTFLAGS='-C link-arg=-s' cargo build --target wasm32-unknown-unknown --release
 cp target/wasm32-unknown-unknown/release/whitelist.wasm ./res/