[StepSecurity] Apply security best practices (#234)

* [StepSecurity] Apply security best practices Signed-off-by: StepSecurity Bot <bot@stepsecurity.io> * Delete dependency-review.yml --------- Signed-off-by: StepSecurity Bot <bot@stepsecurity.io> Co-authored-by: Gary Gregory <garydgregory@users.noreply.github.com>
apache · Jul 21, 2023 · be0da6f · be0da6f
1 parent d5da7ad
commit be0da6f
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diff --git a/.github/workflows/adhoctest.yml b/.github/workflows/adhoctest.yml
@@ -25,6 +25,9 @@ on:
     paths:
       - '**/workflows/adhoctest.yml'
 
+permissions:
+  contents: read
+
 jobs:
   build:
 

diff --git a/src/docker/Dockerfile b/src/docker/Dockerfile
@@ -17,7 +17,7 @@
 # for Linux 64-bit and 32-bit, and Windows 64-bit and 32-bit.
 # See the README for further details.
 
-FROM ubuntu:18.04
+FROM ubuntu:18.04@sha256:152dc042452c496007f07ca9127571cb9c29697f42acbfad72324b2bb2e43c98
 
 ENV JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64
 ENV MAVEN_HOME=/opt/maven