diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..f52a3ef
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,58 @@
+FROM python:3.6
+
+RUN     apt-get update && \
+        apt-get install -y \
+            automake \
+            bison \
+            build-essential \
+            cmake \
+            libboost-dev \
+            libgl1-mesa-dev \
+            libglu1-mesa-dev \
+            libharfbuzz-dev \
+            libpcre3-dev \
+            libsm6 \
+            wget
+
+WORKDIR /tmp/build
+
+ARG SWIG_VERSION=3.0.9
+ARG FREETYPE_VERSION=2.6.3
+ARG OCE_VERSION=0.18.3
+ARG SMESH_VERSION=6.7.6
+ARG PYTHONOCC_CORE_VERSION=0.18.1
+
+COPY build-files/build_swig.sh /tmp
+COPY build-files/build_freetype.sh /tmp
+COPY build-files/build_oce.sh /tmp
+COPY build-files/build_smesh.sh /tmp
+COPY build-files/build_pythonocc_core.sh /tmp
+
+copy convert-stl.py /
+
+RUN chmod +x ../*.sh
+RUN chmod +x /convert-stl.py
+
+RUN ../build_swig.sh $SWIG_VERSION
+RUN ../build_freetype.sh $FREETYPE_VERSION
+RUN ../build_oce.sh $OCE_VERSION
+RUN ../build_smesh.sh $SMESH_VERSION
+RUN ../build_pythonocc_core.sh $PYTHONOCC_CORE_VERSION
+
+
+
+WORKDIR /
+
+RUN     apt-get remove --auto-remove -y \
+            automake \
+            bison \
+            build-essential \
+            cmake \
+            libboost-dev \
+            libpcre3-dev \
+            wget && \
+        rm -rf /var/lib/apt/lists/*
+
+COPY entrypoint.sh /entrypoint.sh
+RUN chmod +x /entrypoint.sh
+ENTRYPOINT ["/entrypoint.sh"]
\ No newline at end of file
diff --git a/action.yml b/action.yml
new file mode 100644
index 0000000..82da4d3
--- /dev/null
+++ b/action.yml
@@ -0,0 +1,20 @@
+name: '.STEP to .STL Action'
+description: 'Convert videos in the folder to the given format'
+inputs:
+  step-file:
+    description: 'original file'
+    required: true
+    default: ''
+  output-folder:
+    description: 'Folder in which converted file is stored'
+    required: true
+    default: 'output'
+outputs:
+  time: # id of output
+    description: 'The time we greeted you'
+runs:
+  using: 'docker'
+  image: 'Dockerfile'
+  args:
+    - ${{ inputs.file }}
+    - ${{ inputs.output-folder }}
\ No newline at end of file
diff --git a/build-files/build_freetype.sh b/build-files/build_freetype.sh
new file mode 100644
index 0000000..55cc3ed
--- /dev/null
+++ b/build-files/build_freetype.sh
@@ -0,0 +1,12 @@
+#!/bin/bash
+
+FREETYPE_VERSION=$1
+
+wget -q https://download.savannah.gnu.org/releases/freetype/freetype-$FREETYPE_VERSION.tar.gz
+tar -xf freetype-$FREETYPE_VERSION.tar.gz
+./freetype-$FREETYPE_VERSION/configure
+make
+make install
+rm -rf * .*
+echo -en "\007"
+
diff --git a/build-files/build_oce.sh b/build-files/build_oce.sh
new file mode 100644
index 0000000..e59b6fb
--- /dev/null
+++ b/build-files/build_oce.sh
@@ -0,0 +1,12 @@
+#!/bin/bash
+
+OCE_VERSION=$1
+
+wget -q https://github.com/tpaviot/oce/archive/OCE-$OCE_VERSION.tar.gz
+tar -xf OCE-$OCE_VERSION.tar.gz
+cmake ./oce-OCE-$OCE_VERSION
+make -j$(nproc --all)
+make install/strip
+rm -rf * .*
+echo -en "\007"
+
diff --git a/build-files/build_pythonocc_core.sh b/build-files/build_pythonocc_core.sh
new file mode 100644
index 0000000..b087f77
--- /dev/null
+++ b/build-files/build_pythonocc_core.sh
@@ -0,0 +1,17 @@
+#!/bin/bash
+
+PYTHON_OCC_CORE_VERSION=$1
+
+wget -q https://github.com/tpaviot/pythonocc-core/archive/$PYTHON_OCC_CORE_VERSION.tar.gz
+tar -xf $PYTHON_OCC_CORE_VERSION.tar.gz
+
+cmake ./pythonocc-core-$PYTHON_OCC_CORE_VERSION \
+    -DPYTHON_INCLUDE_DIR=/usr/local/include/python3.6m \
+    -DPYTHON_LIBRARY=/usr/local/lib/libpython3.6m.so \
+    -DPYTHONOCC_WRAP_SMESH=TRUE
+
+make -j$(nproc --all)
+make install
+rm -rf * .*
+echo -en "\007"
+
diff --git a/build-files/build_smesh.sh b/build-files/build_smesh.sh
new file mode 100644
index 0000000..36a0d1a
--- /dev/null
+++ b/build-files/build_smesh.sh
@@ -0,0 +1,12 @@
+#!/bin/bash
+
+SMESH_VERSION=$1
+
+wget -q https://github.com/tpaviot/smesh/archive/$SMESH_VERSION.tar.gz
+tar -xf $SMESH_VERSION.tar.gz
+cmake smesh-$SMESH_VERSION
+make -j$(nproc --all)
+make install
+rm -rf * .*
+echo -en "\007"
+
diff --git a/build-files/build_swig.sh b/build-files/build_swig.sh
new file mode 100644
index 0000000..5a4927d
--- /dev/null
+++ b/build-files/build_swig.sh
@@ -0,0 +1,15 @@
+#!/bin/bash
+
+SWIG_VERSION=$1
+
+wget -q https://github.com/swig/swig/archive/rel-$SWIG_VERSION.tar.gz
+tar -xf rel-$SWIG_VERSION.tar.gz
+cd swig-rel-$SWIG_VERSION
+./autogen.sh
+cd ..
+./swig-rel-$SWIG_VERSION/configure
+make
+make install
+rm -rf * .*
+echo -en "\007"
+
diff --git a/convert-stl.py b/convert-stl.py
new file mode 100644
index 0000000..e3b7e91
--- /dev/null
+++ b/convert-stl.py
@@ -0,0 +1,20 @@
+from OCC.STEPControl import STEPControl_Reader
+from OCC.StlAPI import StlAPI_Writer
+import sys
+
+input_file  = sys.argv[1][0]   
+output_file = sys.argv[1][1]   
+
+
+step_reader = STEPControl_Reader()
+step_reader.ReadFile( input_file )
+step_reader.TransferRoot()
+myshape = step_reader.Shape()
+print("File read")
+
+# Export to STL
+stl_writer = StlAPI_Writer()
+stl_writer.SetASCIIMode(True)
+stl_writer.Write(myshape, output_file)
+print("Written")
+
diff --git a/entrypoint.sh b/entrypoint.sh
new file mode 100644
index 0000000..5db73fb
--- /dev/null
+++ b/entrypoint.sh
@@ -0,0 +1,20 @@
+
+#!/bin/sh -l
+
+OIFS="$IFS"
+IFS=$'\n'
+for IN in `find $1 -iname "*.*"`
+do
+OUT=${IN/$1/$3}
+DIR=$(dirname $OUT)
+FILE_NAME="${IN##*/}"
+FILE_EXTENSION="${FILE_NAME##*.}"
+FILE_TYPE=".stl"
+mkdir -p "$DIR"
+
+echo "Converting $IN"
+python convert-stl $IN ${OUT/$FILE_EXTENSION/$FILE_TYPE}
+
+
+done
+IFS="$OIFS"
\ No newline at end of file