diff --git a/tests/docker/Dockerfile.testing.cpp.debian_buster b/tests/docker/Dockerfile.testing.cpp.debian_buster
new file mode 100644
index 0000000..7b0cce2
--- /dev/null
+++ b/tests/docker/Dockerfile.testing.cpp.debian_buster
@@ -0,0 +1,10 @@
+FROM debian:10.1-slim as base
+RUN apt -qq update >/dev/null
+RUN apt -qq install -y cmake make build-essential >/dev/null
+RUN apt -qq install -y autoconf git libtool >/dev/null
+RUN apt -qq install -y clang >/dev/null
+FROM base
+# Travis machines have 2 cores. Can be redefined with 'run --env PAR_JOBS=N'.
+ENV JOBS=2
+WORKDIR /flatbuffers
+ADD . .
diff --git a/tests/docker/build_flatc.run.sh b/tests/docker/build_flatc.run.sh
new file mode 100755
index 0000000..c8885b1
--- /dev/null
+++ b/tests/docker/build_flatc.run.sh
@@ -0,0 +1,15 @@
+set -e
+
+JOBS=${JOBS:-1}
+config=$1
+echo ""
+echo "Build 'flatc' compiler for '$config'"
+
+cmake . -DCMAKE_BUILD_TYPE=$config \
+  -DFLATBUFFERS_BUILD_FLATC=1 -DFLATBUFFERS_STATIC_FLATC=1 \
+  -DFLATBUFFERS_BUILD_TESTS=0 -DFLATBUFFERS_INSTALL=0
+cmake --build . --target flatc --clean-first -- -j$JOBS
+
+echo "Check generated code"
+.travis/check-generate-code.sh
+echo "Done"
diff --git a/tests/docker/cpp_test.run.sh b/tests/docker/cpp_test.run.sh
new file mode 100755
index 0000000..fa3b0fb
--- /dev/null
+++ b/tests/docker/cpp_test.run.sh
@@ -0,0 +1,20 @@
+set -e
+
+JOBS=${JOBS:-1}
+export UBSAN_OPTIONS=halt_on_error=1
+export ASAN_OPTIONS=halt_on_error=1
+export MAKEFLAGS="-j$JOBS"
+
+config=$1
+echo ""
+echo "Build Flatbuffers project for '$config' with jobs=$JOBS"
+
+cmake . -DCMAKE_BUILD_TYPE=$config \
+  -DFLATBUFFERS_BUILD_TESTS=ON -DFLATBUFFERS_CODE_SANITIZE=ON
+cmake --build . --target all --clean-first -- -j$JOBS
+ctest --extra-verbose --output-on-failure -j$JOBS
+
+echo "Check generated code"
+.travis/check-generate-code.sh
+
+echo "C++ tests done"
diff --git a/tests/docker/languages/Dockerfile.testing.node.10_13_0 b/tests/docker/languages/Dockerfile.testing.node.10_13_0
index b821105..8e48c23 100644
--- a/tests/docker/languages/Dockerfile.testing.node.10_13_0
+++ b/tests/docker/languages/Dockerfile.testing.node.10_13_0
@@ -5,4 +5,6 @@
 WORKDIR /code/tests
 RUN node --version
 RUN ../flatc -b -I include_test monster_test.fbs unicode_test.json
+RUN npm install
+RUN npm run pretest
 RUN node JavaScriptTest ./monster_test_generated
diff --git a/tests/docker/languages/Dockerfile.testing.node.11_2_0 b/tests/docker/languages/Dockerfile.testing.node.11_2_0
index f6b48e6..090bb45 100644
--- a/tests/docker/languages/Dockerfile.testing.node.11_2_0
+++ b/tests/docker/languages/Dockerfile.testing.node.11_2_0
@@ -5,4 +5,6 @@
 WORKDIR /code/tests
 RUN node --version
 RUN ../flatc -b -I include_test monster_test.fbs unicode_test.json
+RUN npm install
+RUN npm run pretest
 RUN node JavaScriptTest ./monster_test_generated
diff --git a/tests/docker/languages/Dockerfile.testing.python.numpy.cpython_2_7_15 b/tests/docker/languages/Dockerfile.testing.python.numpy.cpython_2_7_15
new file mode 100644
index 0000000..718c5ac
--- /dev/null
+++ b/tests/docker/languages/Dockerfile.testing.python.numpy.cpython_2_7_15
@@ -0,0 +1,9 @@
+FROM python:2.7.15-slim-stretch as base
+WORKDIR /code
+ADD . .
+RUN cp flatc_debian_stretch flatc
+WORKDIR /code/tests
+RUN python --version
+RUN pip install numpy
+RUN pip install coverage
+RUN ./PythonTest.sh
diff --git a/tests/docker/languages/Dockerfile.testing.python.numpy.cpython_3_7_1 b/tests/docker/languages/Dockerfile.testing.python.numpy.cpython_3_7_1
new file mode 100644
index 0000000..1de2c26
--- /dev/null
+++ b/tests/docker/languages/Dockerfile.testing.python.numpy.cpython_3_7_1
@@ -0,0 +1,9 @@
+FROM python:3.7.1-slim-stretch as base
+WORKDIR /code
+ADD . .
+RUN cp flatc_debian_stretch flatc
+WORKDIR /code/tests
+RUN python --version
+RUN pip install numpy
+RUN pip install coverage
+RUN ./PythonTest.sh
diff --git a/tests/docker/languages/Dockerfile.testing.rust.1_30_1 b/tests/docker/languages/Dockerfile.testing.rust.1_40_0
similarity index 74%
rename from tests/docker/languages/Dockerfile.testing.rust.1_30_1
rename to tests/docker/languages/Dockerfile.testing.rust.1_40_0
index 4d1755c..849ad76 100644
--- a/tests/docker/languages/Dockerfile.testing.rust.1_30_1
+++ b/tests/docker/languages/Dockerfile.testing.rust.1_40_0
@@ -1,4 +1,4 @@
-FROM rust:1.30.1-slim-stretch as base
+FROM rust:1.40.0-slim-stretch as base
 WORKDIR /code
 ADD . .
 RUN cp flatc_debian_stretch flatc
diff --git a/tests/docker/languages/Dockerfile.testing.rust.big_endian.1_30_1 b/tests/docker/languages/Dockerfile.testing.rust.big_endian.1_40_0
similarity index 89%
rename from tests/docker/languages/Dockerfile.testing.rust.big_endian.1_30_1
rename to tests/docker/languages/Dockerfile.testing.rust.big_endian.1_40_0
index f2e93f4..3abf8df 100644
--- a/tests/docker/languages/Dockerfile.testing.rust.big_endian.1_30_1
+++ b/tests/docker/languages/Dockerfile.testing.rust.big_endian.1_40_0
@@ -1,4 +1,4 @@
-FROM rust:1.30.1-slim-stretch as base
+FROM rust:1.40.0-slim-stretch as base
 RUN apt -qq update -y && apt -qq install -y \
     gcc-mips-linux-gnu \
     libexpat1 \
diff --git a/tests/docker/languages/Dockerfile.testing.swift_5_2 b/tests/docker/languages/Dockerfile.testing.swift_5_2
new file mode 100644
index 0000000..b309477
--- /dev/null
+++ b/tests/docker/languages/Dockerfile.testing.swift_5_2
@@ -0,0 +1,8 @@
+FROM swift:5.2
+WORKDIR /code
+ADD . .
+RUN cp flatc_debian_stretch flatc
+WORKDIR /code/tests
+RUN swift --version
+WORKDIR /code/tests/FlatBuffers.Test.Swift
+RUN sh SwiftTest.sh