diff --git a/.dockerignore b/.dockerignore
new file mode 100644
index 0000000..1d873d4
--- /dev/null
+++ b/.dockerignore
@@ -0,0 +1,37 @@
+# Local .terraform directories
+**/.terraform/*
+
+# .tfstate files
+**/*.tfstate
+**/*.tfstate.*
+
+# Crash log files
+**/crash.log
+**/crash.*.log
+
+# Exclude all .tfvars files, which are likely to contain sensitive data, such as
+# password, private keys, and other secrets. These should not be part of version
+# control as they are data points which are potentially sensitive and subject
+# to change depending on the environment.
+**/*.tfvars
+**/*.tfvars.json
+
+# Ignore override files as they are usually used to override resources locally and so
+# are not checked in
+**/override.tf
+**/override.tf.json
+**/*_override.tf
+**/*_override.tf.json
+
+# Ignore transient lock info files created by terraform apply
+**/.terraform.tfstate.lock.info
+
+# Include override files you do wish to add to version control using negated pattern
+# !example_override.tf
+
+# Include tfplan files to ignore the plan output of command: terraform plan -out=tfplan
+# example: *tfplan*
+
+# Ignore CLI configuration files
+**/.terraformrc
+**/terraform.rc
diff --git a/environments/dev/main.tf b/environments/dev/main.tf
index 639e06b..270c185 100644
--- a/environments/dev/main.tf
+++ b/environments/dev/main.tf
@@ -1,4 +1,4 @@
 locals {
-  project_id = "project=id"
+  project_id = "project_id"
   location   = "location"
 }
diff --git a/environments/prod/main.tf b/environments/prod/main.tf
index 639e06b..270c185 100644
--- a/environments/prod/main.tf
+++ b/environments/prod/main.tf
@@ -1,4 +1,4 @@
 locals {
-  project_id = "project=id"
+  project_id = "project_id"
   location   = "location"
 }
diff --git a/environments/stg/main.tf b/environments/stg/main.tf
index 639e06b..270c185 100644
--- a/environments/stg/main.tf
+++ b/environments/stg/main.tf
@@ -1,4 +1,4 @@
 locals {
-  project_id = "project=id"
+  project_id = "project_id"
   location   = "location"
 }