diff --git a/.github/actions/bitcoin-int-tests/Dockerfile.code-cov b/.github/actions/bitcoin-int-tests/Dockerfile.code-cov
deleted file mode 100644
index 209b80473..000000000
--- a/.github/actions/bitcoin-int-tests/Dockerfile.code-cov
+++ /dev/null
@@ -1,22 +0,0 @@
-FROM rust:bullseye AS test
-
-WORKDIR /build
-
-ENV CARGO_MANIFEST_DIR="$(pwd)"
-
-RUN rustup component add llvm-tools-preview && \
-    cargo install grcov
-
-ENV RUSTFLAGS="-Cinstrument-coverage" \
-    LLVM_PROFILE_FILE="stacks-blockchain-%p-%m.profraw"
-
-COPY . .
-
-RUN cargo build --workspace && \
-    cargo test --workspace
-
-# Generate coverage report and upload it to codecov
-RUN grcov . --binary-path ./target/debug/ -s . -t lcov --branch --ignore-not-existing --ignore "/*" -o lcov.info
-
-FROM scratch AS export-stage
-COPY --from=test /build/lcov.info /
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d1a04a194..fcdc1ebda 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -40,17 +40,21 @@ jobs:
   unit-tests:
     runs-on: ubuntu-latest
     steps:
+      - name: Add code coverage tools
+        run: |
+          rustup component add llvm-tools-preview
+          cargo install grcov
       - uses: actions/checkout@v2
       - name: Run units tests (with coverage)
         env:
-          DOCKER_BUILDKIT: 1
-        # Remove .dockerignore file so codecov has access to git info
+          RUSTFLAGS: -Cinstrument-coverage
+          LLVM_PROFILE_FILE: stacks-blockchain-%p-%m.profraw
         run: |
-          rm .dockerignore
-          docker build -o coverage-output -f ./.github/actions/bitcoin-int-tests/Dockerfile.code-cov .
+          cargo test --workspace
+          grcov . --binary-path ./target/debug/ -s . -t lcov --branch --ignore-not-existing --ignore "/*" -o lcov.info
       - uses: codecov/codecov-action@v2
         with:
-          files: ./coverage-output/lcov.info
+          files: ./lcov.info
           name: unit_tests
           fail_ci_if_error: false
 
diff --git a/Cargo.toml b/Cargo.toml
index b930bacb7..4af100218 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -109,8 +109,16 @@ monitoring_prom = ["prometheus"]
 slog_json = ["slog-json", "stacks_common/slog_json", "clarity/slog_json"]
 testing = []
 
-[profile.dev.package.regex]
-opt-level = 2
+# Use a bit more than default optimization for
+#  dev builds to speed up test execution
+[profile.dev]
+opt-level = 1
+
+# Use release-level optimization for dependencies
+# This slows down "first" builds on development environments,
+#  but won't impact subsequent builds.
+[profile.dev.package."*"]
+opt-level = 3
 
 [target.'cfg(all(any(target_arch = "x86_64", target_arch = "x86", target_arch = "aarch64"), not(target_env = "msvc")))'.dependencies]
 sha2 = { version = "0.10", features = ["asm"] }