diff --git a/docker/debian/Dockerfile b/docker/debian/Dockerfile
index 3e05c25..15bc3e4 100644
--- a/docker/debian/Dockerfile
+++ b/docker/debian/Dockerfile
@@ -98,9 +98,10 @@ EOF
 
 # Install rust.
 ARG RUST_VERSION
-RUN <<EOF
-curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y  --default-toolchain=${RUST_VERSION}
-EOF
+ENV CARGO_HOME="/opt/rust/.cargo"
+ENV RUSTUP_HOME="/opt/rust/.rustup"
+RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y  --default-toolchain=${RUST_VERSION}
+ENV PATH="$CARGO_HOME/bin:$PATH"
 
 # Print versions.
 RUN <<EOF
@@ -112,8 +113,6 @@ gcovr --version
 ld.gold --version
 mold --version
 python3 --version
-. ~/.bashrc
-. ~/.cargo/env
 rustc --version
 cargo --version
 EOF
diff --git a/docker/rhel/Dockerfile b/docker/rhel/Dockerfile
index 75f19ba..3591749 100644
--- a/docker/rhel/Dockerfile
+++ b/docker/rhel/Dockerfile
@@ -112,9 +112,10 @@ EOF
 
 # Install rust.
 ARG RUST_VERSION
-RUN <<EOF
-curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y  --default-toolchain=${RUST_VERSION}
-EOF
+ENV CARGO_HOME="/opt/rust/.cargo"
+ENV RUSTUP_HOME="/opt/rust/.rustup"
+RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y  --default-toolchain=${RUST_VERSION}
+ENV PATH="$CARGO_HOME/bin:$PATH"
 
 # Print versions.
 RUN <<EOF
@@ -126,8 +127,6 @@ gcovr --version
 ld.gold --version
 mold --version
 python3 --version
-. ~/.bashrc
-. ~/.cargo/env
 rustc --version
 cargo --version
 EOF
diff --git a/docker/ubuntu/Dockerfile b/docker/ubuntu/Dockerfile
index d993615..857e528 100644
--- a/docker/ubuntu/Dockerfile
+++ b/docker/ubuntu/Dockerfile
@@ -84,9 +84,10 @@ EOF
 
 # Install rust.
 ARG RUST_VERSION
-RUN <<EOF
-curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y  --default-toolchain=${RUST_VERSION}
-EOF
+ENV CARGO_HOME="/opt/rust/.cargo"
+ENV RUSTUP_HOME="/opt/rust/.rustup"
+RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y  --default-toolchain=${RUST_VERSION}
+ENV PATH="$CARGO_HOME/bin:$PATH"
 
 # Print versions.
 RUN <<EOF
@@ -98,8 +99,6 @@ gcovr --version
 ld.gold --version
 mold --version
 python3 --version
-. ~/.bashrc
-. ~/.cargo/env
 rustc --version
 cargo --version
 EOF