feat: support docker image tarballs

Updated docs

Dockerfile

@@ -1,4 +1,4 @@
-FROM docker:19.03
+FROM docker:20.10
 
 RUN apk add bash
 

README.md

@@ -4,10 +4,14 @@
 - run an image built by a previous step.
 - See https://github.com/addnab/docker-run-action/blob/main/action.yml for all the available inputs.
 
+## Examples
+
 #### Typical Use Case
 
 ```yaml
-- uses: addnab/docker-run-action@v2
+- name: Checkout 
+  uses: actions/checkout@v2 # Required to mount the Github Workspace to a volume 
+- uses: addnab/docker-run-action@v3
   with:
     username: ${{ secrets.DOCKER_USERNAME }}
     password: ${{ secrets.DOCKER_PASSWORD }}
@@ -21,7 +25,7 @@
 
 #### run a privately-owned image
 ```yaml
-- uses: addnab/docker-run-action@v2
+- uses: addnab/docker-run-action@v3
   with:
     username: ${{ secrets.DOCKER_USERNAME }}
     password: ${{ secrets.DOCKER_PASSWORD }}
@@ -32,11 +36,11 @@
 
 #### run an image built by a previous step
 ```yaml
-- uses: docker/build-push-action@v1
+- uses: docker/build-push-action@v2
   with:
-    repository: test-image
+    tags: test-image:latest
     push: false
-- uses: addnab/docker-run-action@v2
+- uses: addnab/docker-run-action@v3
   with:
     image: test-image:latest
     run: echo "hello world"
@@ -46,7 +50,7 @@
 #### use a specific shell (default: sh). 
 *Note: The shell must be installed in the container*
 ```yaml
-- uses: addnab/docker-run-action@v2
+- uses: addnab/docker-run-action@v3
   with:
     image: docker:latest
     shell: bash

RELEASES.md

@@ -1,5 +1,9 @@
 # addnab/docker-run-action Releases
 
+### 3.0.0
+
+- Upgrade to docker 20.10 https://github.com/addnab/docker-run-action/pull/12
+
 ### 2.0.0
 
 - Added support for networking with other containers [#3](https://github.com/addnab/docker-run-action/pull/3) [#7](https://github.com/addnab/docker-run-action/pull/7)

action.yml

@@ -2,6 +2,9 @@
 name: 'Docker Run Action'
 description: 'Run a command in a new container'
 inputs:
+  tarball:
+    description: 'Image tarball'
+    required: false
   image:
     description: 'Image'
     required: true
@@ -27,7 +30,7 @@ inputs:
   docker_network:
     description: 'Docker Network ID'
     default: ${{ job.container.network }}
-    retuired: false
+    required: false
 runs:
   using: 'docker'
   image: 'Dockerfile'

entrypoint.sh

@@ -4,10 +4,12 @@ if [ ! -z $INPUT_USERNAME ];
 then echo $INPUT_PASSWORD | docker login $INPUT_REGISTRY -u $INPUT_USERNAME --password-stdin
 fi
 
-echo "$INPUT_RUN" | sed -e 's/\\n/;/g' > semicolon_delimited_script
-
 if [ ! -z $INPUT_DOCKER_NETWORK ];
 then INPUT_OPTIONS="$INPUT_OPTIONS --network $INPUT_DOCKER_NETWORK"
 fi
 
-exec docker run -v "/var/run/docker.sock":"/var/run/docker.sock" $INPUT_OPTIONS --entrypoint=$INPUT_SHELL $INPUT_IMAGE -c "`cat semicolon_delimited_script`"
+if [ ! -z $INPUT_TARBALL ];
+then docker load --input $INPUT_TARBALL
+fi
+
+exec docker run -v "/var/run/docker.sock":"/var/run/docker.sock" $INPUT_OPTIONS --entrypoint=$INPUT_SHELL $INPUT_IMAGE -c "${INPUT_RUN//$'\n'/;}"