delete mount cache folders

.docker/Dockerfile-unique

@@ -15,10 +15,7 @@ ARG FEATURES
 #   of it to this day (Ignoring incremental compilation, which is explicitly disabled by CARGO_INCREMENTAL=0). Only the
 #   fully built crates will be cached depending on the crate source, version and feature set, which are locked by
 #   Cargo.lock, which can't be updated because of the --locked flag.
-RUN --mount=type=cache,target=/usr/local/cargo/registry \
-    --mount=type=cache,target=/usr/local/cargo/git \
-    --mount=type=cache,target=/workdir/unique-chain/target \
-    cd unique-chain && \
+RUN cd unique-chain && \
     echo "Using runtime features ${FEATURES}" && \
     CARGO_INCREMENTAL=0 cargo build --profile integration-tests --features=fast-inflation,"${FEATURES}" --locked && \
     mv ./target/integration-tests/unique-collator /workdir/unique-chain/ && \

.docker/Dockerfile-unique-release

@@ -9,9 +9,6 @@ ARG FEATURES
 
 RUN git clone -b "$UNIQUE_VERSION" --depth 1 https://github.com/uniquenetwork/unique-chain.git && \
     cd unique-chain && git checkout "$UNIQUE_HASH" && \
-    --mount=type=cache,target=/usr/local/cargo/registry \
-    --mount=type=cache,target=/usr/local/cargo/git \
-    --mount=type=cache,target=/workdir/unique-chain/target \
     CARGO_INCREMENTAL=0 cargo build --release --features="${FEATURES}" --locked && \
     mv ./target/release/unique-collator /workdir/unique-chain/ && \
     cd target/release/wbuild && find . -name "*.wasm" -exec sh -c 'mkdir -p "../../../wasm/$(dirname {})"; cp {} "../../../wasm/{}"' \;