Add Docker image info

Author: mblue9

DESCRIPTION

@@ -53,3 +53,4 @@ biocViews: RNASeq, DifferentialExpression, GeneExpression, Normalization, Cluste
 URL: https://tidytranscriptomics-workshops.github.io/bioc2022_tidytranscriptomics/
 BugReports: https://github.com/tidytranscriptomics-workshops/bioc2022_tidytranscriptomics/issues/new/choose
 VignetteBuilder: knitr
+DockerImage: ghcr.io/tidytranscriptomics-workshops/bioc2022_tidytranscriptomics:latest

README.md

@@ -24,7 +24,24 @@ More details on the workshop are below.
 
 For the BioC2022 workshop, an RStudio in the cloud will be provided with everything installed, all that participants will need is a web browser. 
 
-If you want to install the packages and material post-workshop, the instructions are below. The workshop is designed for R `4.2` and Bioconductor 3.16.
+If you want to install the packages and material post-workshop, they can be installed using one of the two ways below. The workshop is designed for R `4.2` and Bioconductor 3.16.
+
+### Via Docker image
+
+If you're familiar with [Docker](https://docs.docker.com/get-docker/) you could use the Docker image which has all the software pre-configured to the correct versions.
+
+```
+docker run -e PASSWORD=abc -p 8787:8787 ghcr.io/tidytranscriptomics-workshops/bioc2022_tidytranscriptomics
+```
+
+Once running, navigate to <http://localhost:8787/> and then login with
+`Username:rstudio` and `Password:abc`.
+
+You should see the Rmarkdown file with all the workshop code which you can run.
+
+### Via GitHub
+
+Alternatively, you could install the workshop using the commands below in R `4.2`.
 
 ```
 #install.packages('remotes')